collision detection

(redirected from Collision checking)

collision detection

[kə′lizh·ən di‚tek·shən]
(computer science)
A procedure in which a computer network senses a situation where two computer devices attempt to access the network at the same time and blocks the messages, requiring each device to resubmit its message at a randomly selected time.

collision detection

A class of methods for sharing a data transmission medium in which hosts transmit as soon as they have data to send and then check to see whether their transmission has suffered a collision with another host's.

If a collision is detected then the data must be resent. The resending algorithm should try to minimise the chance that two hosts's data will repeatedly collide. For example, the CSMA/CD protocol used on Ethernet specifies that they should then wait for a random time before re-transmitting.

See also backoff.

This contrasts with slotted protocols and token passing.
References in periodicals archive ?
The Collision Compute Shader level includes a Compute Shader that performs object boundary collision checking, surface collision checking, and subsequent collision response computation.
The new version includes automatic feature extraction for point-cloud batch inspection, easier navigation of the history tree, better control over RPS alignments and new options for collision checking.
Recently, with the development of parallel computing technologies [32-34], some approaches use GPU technology to improve processing time of robot collision checking [35-37].
PowerMILL collision checking for five-axis machining uses color codes to warn of near misses, depending on user-specified clearances.
Version 10 of its Unibend package features a collision checking feature that enables users to program the machine for new parts.
Nearly 7,500 solid models are arranged by machining area or product family and come in the 3D Step format so they can be incorporated into design packages for collision checking in tool path simulations.
When they were run by EEW, PowerMILL fully justified the confidence placed in the software's ability to calculate the residual material model and to undertake collision checking of the milling machine.
It also includes enhanced collision checking that monitors spindle states for milling and turning simulation, enabling Vericut to catch common programming errors with spindle and cutting tool usage.
Collision checking is integral, as is machining, which is tied to either step-over or constant scallop height.
These objects are considered static and no collision checking is done between two static objects.
Included are ISOGEN Isometrics, CADWorx Plant Professional, CADWorx Design Review, live database links, links to stress analysis, specification-driven modeling, collision checking and intelligent point-cloud-to-modeling capabilities.

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