Collision Detection

Collision detection is a physics concept, which is used to study the effect of the collision of two objects and what happens at the time of the collision, this article however, will not deal with this concept with reference to the field of Physics. This article deals with this term with reference to the networking world and the computing world. With respect to computing and networking world this term has to meanings attached to it. This article will state both of these.

Firstly, the term is used in the networking world to describe a process by which a node is able to determine that whether a collision has occurred or not. Collision is quite a common problem that happens in a network and between two networks or between two devices and to solve or to deal with this problem, a protocol is needed to recover from such events. For this very purpose, different protocols have been released in the market for by different vendors for different networking devices, like, in case of an Ethernet, the protocol CSMA/CD is used as its collision detection and recovery system. In the same way, any other device would make use of some other protocol.

With reference to the virtual reality environment, this collision detection is a program designed to judge and find out that how close a user is to the real physical objects around him after which this program will stop their movement before they collide with it. The application of this program can be seen in the robots and automatic, computerized cars and even in the autopilots in airplanes. In all of these examples and other fields where this program is used, the main role of the program is used to judge the distance between the physical object and the device, so that it can be stopped before it collides.