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Detection device

A detection device and detection unit technology, applied in measurement devices, optical devices, instruments, etc., can solve problems such as device noise effects, and achieve the effect of reducing noise effects

Active Publication Date: 2019-09-17
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The device described in Patent Document 1 has the problem of being easily affected by noise

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0053] figure 1 It is a figure which shows the structure of the detection apparatus which concerns on Embodiment 1 of this invention. figure 2 From figure 1 A diagram of the elongated body observed in the direction of arrow A shown. In Embodiment 1, an example in which the detection device detects the position of the elongated body will be described. The elongated body contains, for example, a rope 1 . The detection device detects the position of the strip moving along the length direction. For example, rope 1 moves in the direction of arrow B. Arrow B is consistent with the length direction of rope 1. As an example of the rope 1 that moves in this way, a wire rope used in an elevator can be mentioned. The moving direction of the rope 1 may be one direction. In addition, the elongated body is not limited to the rope 1 .

[0054] The rope 1 has a plurality of strands. The rope 1 is formed by twisting a plurality of strands. Therefore, the rope 1 has a periodic morpho...

Embodiment approach 2

[0093] In Embodiment 1, an example in which reference data is expressed by a matrix of n rows and one column was described. In this embodiment, an example in which data expressed in a matrix of n rows and m columns is stored in the storage unit 7 as reference data will be described. m is, for example, an integer of 2 or more. Alternatively, m=n.

[0094] Figure 15 is an alternative way to illustrate selected benchmark data. For example, data corresponding to the processed data obtained when the range C1 is irradiated with light from the light source 4 is stored in the storage unit 7 as first reference data. The straight line c1 corresponds to one measurement line, and the range C1 corresponds to m measurement lines. In addition, data corresponding to the processed data obtained when the range C2 is irradiated with light from the light source 4 is stored in the storage unit 7 as second reference data. The first reference data Ref1 and the second reference data Ref2 can be...

Embodiment approach 3

[0102] In Embodiment 1, an example was described in which data obtained from surface data acquired by the sensor head 2 or data corresponding thereto was stored in the storage unit 7 as reference data. In this embodiment, an example in which data obtained from design information is stored in the storage unit 7 as reference data will be described.

[0103] Figure 16 is an alternative way to illustrate selected benchmark data. For example, a sine wave having the same cycle as that of the form on the surface of the elongated body is stored in the storage unit 7 as first reference data. A cosine wave having the same period as that of the form on the surface of the elongated body is stored in the storage unit 7 as second reference data. The first reference data Ref1 and the second reference data Ref2 are represented by a matrix of n rows and one column as shown in the above-mentioned formula 2.

[0104] According to the detecting device having the above configuration, the inner...

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Abstract

This detector is provided with a sensor head (2), a storage unit (7), a data processing unit (8), a similarity detection unit (9) and a phase calculation unit (10). The sensor head (2) acquires surface data about an elongate body. The storage unit (7) stores first reference data and second reference data. The data processing unit (8) generates processing data from the surface data. The degree of similarity calculation unit (9) calculates a first degree of similarity and a second degree of similarity. The phase calculation unit (10) calculates the phase of a similarity vector having the first degree of similarity and the second degree of similarity as components.

Description

technical field [0001] The invention relates to a detection device which takes a strip body as a detection object. Background technique [0002] Patent Document 1 describes a device for inspecting a rope. The device described in Patent Document 1 has a light source and a light receiving element. The rope is arranged between the light source and the light receiving element. In the device described in Patent Document 1, the diameter of the rope is calculated from the amount of light received by the light receiving element. The position of the rope is calculated by aligning the peak interval of the calculated diameter with the interval of the strands. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent No. 5436659 Contents of the invention [0006] The problem to be solved by the invention [0007] The device described in Patent Document 1 has a problem of being easily affected by noise. For example, when fine dust adher...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00G01B11/24G01B11/30G01N21/892
CPCG01B11/00G01B11/24G01B11/30G01N21/892
Inventor 堀淳二笹井浩之望月敬太片冈健司大岛龙平
Owner MITSUBISHI ELECTRIC CORP
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