Optical Sensor

R2026b

Read proximity, color, and brightness

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Optical Sensor block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Simulink Coder Support Package for VEX EDR V5 Robot Brain / Sensors

Description

Add-On Required: This feature requires the Simulink Coder Support Package for VEX EDR V5 Robot Brain add-on.

The Optical Sensor block reads data from the optical sensor that is connected to the VEX^® V5 Brain. You can use this block in your Simulink model to measure color, brightness, and proximity to an object from optical sensor.

Ports

Output

Proximity — Proximity of reflected infrared

scalar

This port sensor measures the amount of reflected Infrared energy from an obstacle. The value of Proximity ranges from 0-255 with higher values indicating closeness to sensor. The nominal range of sensor is 10cm.

Data Types: double

HSB — Hue, saturation, and brightness of object

vector

This port represents the Hue, Saturation, Brightness/Value scale (HSB/HSV). The value for Hue ranges from 0 to 360 with 0 corresponding to red color. The value 120 corresponds to green and value 240 corresponds to blue. The Saturation and Brightness value ranges from 0 to 1.

Dependencies

To enable this port select the HSB (Hue, Saturation, Brightness) parameter.

Data Types: double

RGB — Red, Green, Blue

vector

This port represents the color of the object in Red,Blue,Blue (RGB) scale.

Dependencies

To enable this port select the RGB (Red, Green, Blue) parameter.

Data Types: double

Parameters

Smart Port — Smart Port to which VEX V5 Inertial Sensor is connected

1 (default) | 1 to 21

Select the smart port on the V5 robot to which the VEX V5 inertial sensor is connected. There are 21 smart ports on the V5 robot.

LED Power (%) — Brightness of the LED light

1 (default) | 0 to 100

The value ranges from 0 to 100 and the LED brightness increases with increase in the value.

Sample time — Interval to read values from sensor

0.2 (default) | -1 | positive scalar

Specify the sample time in seconds to determine how often the block reads values from the sensor. When you specify this parameter as -1, Simulink^® determines the best sample time for the block based on the block context within the model.

Additional Outputs

HSB (Hue, Saturation, Brightness) — Hue, Saturation, and Brightness of object

on (default) | off

Select this parameter to enable HSB port. For more information, see HSB.

RBG (Red, Blue, Green) — Color of object

off (default) | on

Select this parameter to enable RGB port. For more information on the RGB port, see RGB.

Data Types: double

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"vexv5lib/Sensors/Optical Sensor"

Example: add_block("vexv5lib/Sensors/Optical Sensor","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using Simulink® Coder™.

Version History

Introduced in R2021b