METHOD AND APPARATUS FOR DETERMINING AN OVERTRAVEL TIME OF A MACHINE
First Claim
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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Accused Products
Abstract
An apparatus for determining an overtravel time of a machine, which has a moveable machine part and an optoelectronic protection device, has a light source designed to produce a defined light spot. The protection device for the machine comprises a camera having an observation area in which at least one protection zone having a protection zone boundary is defined. The protection device produces a stop signal when an object enters the protection zone. The light spot simulates an object within the protection zone. The light source is supported by a support element designed to position the light source in the area of the protection zone boundary. An evaluation and control unit of the apparatus 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 the reception of a stop signal.
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Citations
11 Claims
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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:
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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, and an 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for determining an overtravel time of a machine having a moving 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 method comprising the following steps:
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providing at least one light source which can be selectively switched on and off, moving the machine part, generating a light spot within the protection zone by switching on the light source at a defined starting time, the light spot being designed to simulate an object, detecting a stop time, at which the machine part comes to rest, and determining a time interval between the starting time and the stop time. - View Dependent Claims (11)
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Specification