ev3dev.hardware.sensor.ev3

Class EV3IRSensor

java.lang.Object

ev3dev.hardware.Device

ev3dev.hardware.EV3DevSysfs

ev3dev.hardware.EV3DevDevice

ev3dev.hardware.sensor.BaseSensor

ev3dev.hardware.sensor.ev3.EV3IRSensor

All Implemented Interfaces:

SensorMode, SensorModes, java.io.Closeable, java.lang.AutoCloseable, SampleProvider

public class EV3IRSensor
extends BaseSensor

EV3 Infra Red sensor
The digital EV3 Infrared Seeking Sensor detects proximity to the robot and reads signals emitted by the EV3 Infrared Beacon. The sensor can alse be used as a receiver for a Lego Ev3 IR remote control.

Supported modes
Mode name	Description	unit(s)	Getter
Distance	Measures the distance to an object in front of the sensor	Undefined	getDistanceMode()
Seek	Locates up to four beacons	Undefined, undefined	#getSeekMode()

EV3 Infra Red sensor
The sensor can be used as a receiver for up to four Lego Ev3 IR remote controls using the #getRemoteCommand and #getRemoteCommands methods. See Sensor Product page See The leJOS sensor framework See leJOS conventions for SampleProviders

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	EV3IRSensor.DistanceMode

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	SWITCH_DELAY

Fields inherited from class ev3dev.hardware.sensor.BaseSensor

currentMode, currentModeS, modes

Fields inherited from class ev3dev.hardware.EV3DevDevice

PATH_DEVICE

Fields inherited from class ev3dev.hardware.Device

closeList

Constructor Summary

Constructors

Constructor and Description
EV3IRSensor(java.lang.String sensorPort)

Method Summary

Modifier and Type	Method and Description
SensorMode	getDistanceMode() EV3 Infra Red sensor, Distance mode Measures the distance to an object in front of the sensor.
protected void	init()

Methods inherited from class ev3dev.hardware.sensor.BaseSensor

fetchSample, getAvailableModes, getCurrentMode, getMode, getMode, getModeCount, getName, sampleSize, setCurrentMode, setCurrentMode, setModes, switchMode, switchMode

Methods inherited from class ev3dev.hardware.EV3DevDevice

connect, getIntegerAttribute, getStringAttribute, setIntegerAttribute, setStringAttribute

Methods inherited from class ev3dev.hardware.EV3DevSysfs

getElements, readFloat, readInteger, readString, writeInteger, writeString

Methods inherited from class ev3dev.hardware.Device

close, releaseOnClose

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SWITCH_DELAY

protected static final int SWITCH_DELAY

See Also:

Constant Field Values

Constructor Detail

EV3IRSensor

public EV3IRSensor(java.lang.String sensorPort)

Method Detail

init

protected void init()

getDistanceMode

public SensorMode getDistanceMode()

EV3 Infra Red sensor, Distance mode
Measures the distance to an object in front of the sensor.

Size and content of the sample
The sample contains one element giving the distance to an object in front of the sensor. The distance provided is very roughly equivalent to meters but needs conversion to give better distance. See product page for details.
The effective range of the sensor in Distance mode is about 5 to 50 centimeters. Outside this range a zero is returned for low values and positive infinity for high values.

Returns:

A sampleProvider See leJOS conventions for SampleProviders See Sensor Product page