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Object detector apparatus and method

A technology for object detection and equipment, applied in the direction of measuring/indicating equipment, metal processing equipment, metal processing machinery parts, etc., can solve problems such as delay

Inactive Publication Date: 2009-11-04
RENISHAW PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is also a delay in changing the object's velocity back to its normal operating frequency

Method used

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  • Object detector apparatus and method
  • Object detector apparatus and method

Examples

Experimental program
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Embodiment Construction

[0082] now refer to figure 1 , figure 1 An object detection apparatus 10 in accordance with the present invention is shown, along with a diagrammatic view of a mounting bracket 80 for securing the device to a machine tool (not shown), etc., and a portion of a tool 30 is shown, the tool 30 To be detected by the detector 10 .

[0083] like figure 2 As shown, the object detection device 10 includes a housing 26 that includes a laser diode light transmitter ("laser") 12, a transmitter focusing lens 14, a receiver lens 16, a photodiode light receiver ("photodiode") 18, and Analyzer circuit 20 . Object detection device 10 is electrically connected to machine tool controller 50 via output line 28 . The machine tool controller 50 controls the operation of the machine tool, which controls the operation of the tool 30 .

[0084] In use, light emitted from the laser 12 is focused along the path 52 approximately at the point where the tool 30 is desired. When tool 30 is present, at...

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Abstract

An object detector apparatus. The object detector apparatus comprises a receiver which is configured to receive a signal from an object having a repetitive motion, in which the signal repeats at a frequency that is dependent on the frequency of the repetitive motion of the object. The object detector apparatus further comprises an analyser which is configured to sample a signal received by the receiver according to a first set of sampling parameters into a first sampled data set, and to produce an output based on a comparison of the first sampled data set with at least one previously sampled data set. The analyser is also operable to sample a signal received by the receiver using a second set of sampling parameters which differs to the first set of sampling parameters into a second sampled data set, and to produce an output based on a comparison of the second sampled data set with at least one previously sampled data set.

Description

technical field [0001] The present invention relates to an object detection apparatus and method for detecting the presence of an object. In particular, the present invention relates to object detection devices for detecting the presence of objects with repetitive motion, such as rotating cutting tools. Background technique [0002] Objects with repetitive motions can be detected by detection devices that receive signals from the objects. For example, the detection device may record the signal as a pattern of data and compare the recorded pattern of data with previously recorded data patterns. The detection device may determine that an object has been detected if there is a correlation between the pattern of the recorded data and the previously recorded data pattern. Such an inspection device for inspecting rotary cutting tools is described in WO-A-06 / 027577. [0003] However, with this known detection device, it is necessary that the motion of the object to be detected i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q17/09B23Q17/24
CPCB23Q17/24
Inventor 维克托·戈登·斯廷普森威廉·肯尼思·戴维斯本杰明·贾森·梅里菲尔德威廉·马丁·巴纳德
Owner RENISHAW PLC