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Sensors

Sensors

Sensors are devices witch converts some physical quantity (temperature, luminance, force, acceleration, etc,) to something that can be read by a human or machine. With the help from sensors the micro controller receives information from the environment and makes decisions basing on this info. There are many types of sensors, in Wikipedia is counted approximately 195 types. But only sensors witch have electrical output signal can be connected to micro controllers. Basing on electrical output signal, it is possible to segment sensors as digital and analogue sensors.

In analogue sensor alters change of physical quantity some of its electrical values, usually voltage or resistance. Since micro controllers are digital devices, we have to change the signal of analogue sensor to digital before we deliver it to controller. For that mainly the analogue-digital converters are used witch are built-in in the micro controllers.

If the analogue sensor includes already digitizer of information, it is called digital sensor. Digital sensors can also nominate information and do much more besides digitalizing. There may be several ways to transmit info from digital sensor to micro controller: easiest way – logic signals, more complex way – through some data link interface. Tough exercises are introducing simpler sensors witch are common in robotics.

en/examples/sensor.1265660834.txt.gz · Last modified: 2020/07/20 09:00 (external edit)
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