Browse Definitions :
Definition

texture sensing

Texture sensing is the ability of a robot end effector to determine whether a surface is smooth or rough. There are several ways to do this; the simplest method involves reflected light.

A laser beam and photoreceptors can be used to tell the difference between a smooth surface and a rough or matte surface with high albedo (low light absorbtion). A shiny surface, such as a sheet of polished metal or a pane of unfrosted glass, behaves according to the principle that the angle of reflection equals the angle of incidence relative to a plane tangent to the point of incidence. A matte surface, such as a sheet of printer paper, scatters incident light rays. If several photoreceptors are set up to capture reflected light, a shiny surface will reflect the beam back only to a receptor that is positioned in the path of the beam whose reflection angle equals its incidence angle. The matte surface will reflect the beam back to all the receptors.

A laser-based texture sensor cannot accurately measure the degree of roughness of a surface that is not shiny. A piece of printer paper reflects visible light in much the same way as a layer of flour, sand, or gravel. In addition, a visible-light-based texture sensor does not work well against rough or matte surfaces with low albedo. Such a surface, such as carbon black, produces a negative response at the photoreceptors. For surfaces of this type, high-speed electrons, infrared ( IR ) rays, or ultraviolet (UV) rays sometimes work. But efficient emitters and receptors of these forms of energy are expensive.

Also see proximity sensing , pressure sensing , and robotics .

This was last updated in September 2005

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

SearchCompliance

  • data governance policy

    A data governance policy is a documented set of guidelines for ensuring that an organization's data and information assets are ...

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

  • compliance as a service (CaaS)

    Compliance as a Service (CaaS) is a cloud service service level agreement (SLA) that specified how a managed service provider (...

SearchSecurity

  • Advanced Encryption Standard (AES)

    The Advanced Encryption Standard, or AES, is a symmetric block cipher chosen by the U.S. government to protect classified ...

  • intrusion detection system (IDS)

    An intrusion detection system (IDS) is a system that monitors network traffic for suspicious activity and alerts when such ...

  • Secure Shell (SSH)

    SSH, also known as Secure Shell or Secure Socket Shell, is a network protocol that gives users, particularly system ...

SearchHealthIT

SearchDisasterRecovery

SearchStorage

  • cache memory

    Cache memory, also called CPU memory, is high-speed static random access memory (SRAM) that a computer microprocessor can access ...

  • capacity management

    Capacity management is the broad term describing a variety of IT monitoring, administration and planning actions that are taken ...

  • cloud storage

    Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, ...

Close