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METHOD AND APPARATUS FOR DETERMINING AN OVERTRAVEL TIME OF A MACHINE

  • US 20100208067A1
  • Filed: 02/11/2010
  • Published: 08/19/2010
  • Est. Priority Date: 02/13/2009
  • Status: Active Grant
First Claim
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1. An apparatus for determining an overtravel time of a machine having a moveable machine part and an optoelectronic protection device designed to stop any movement of the machine part, wherein the protection device comprises a camera having an observation area in which at least one protection zone with a protection zone boundary is defined, and wherein the protection device produces a stop signal when an object enters the protection zone, the apparatus comprising:

  • a light source designed to produce a defined light spot for simulating an object within the protection zone,a support element supporting the light source, with the support element being designed to position the light source in the area of the protection zone boundary, andan evaluation and control unit having a first signal input for receiving the stop signal,wherein the evaluation and control unit is designed to switch on the light source at a defined starting time, and to determine a time interval between the defined starting time and a reception of the stop signal.

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