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Method and device for contactless determination of the temperature of a moving body with unknown emissivity

A technology of thermal radiation coefficient and thermal radiation, applied in radiation pyrometry, sensing radiation of moving objects, measuring devices, etc., can solve the problem of high cost

Active Publication Date: 2018-07-20
SIKORA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method is more expensive
It has also been shown in practice that such temperature measurements do not always provide the necessary accuracy

Method used

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  • Method and device for contactless determination of the temperature of a moving body with unknown emissivity
  • Method and device for contactless determination of the temperature of a moving body with unknown emissivity
  • Method and device for contactless determination of the temperature of a moving body with unknown emissivity

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Embodiment Construction

[0054] use in figure 1 The device according to the invention shown schematically in , should measure the temperature of a moving object 10 contactlessly, in the present case as figure 1 The temperature of the wire 10 conveyed along its longitudinal direction is indicated by the arrow in . The direction of travel of the object 10 to be measured is not important here. The wire 10 can be guided, for example, to an extrusion device, in which an insulating sheath made of plastic is extruded onto the wire. The device also includes a radiation source 12 , in the present case a hollow-cylindrical cavity radiator, which should simulate a black radiator as well as possible. For this purpose, the cavity radiator 12 is provided with a black coating on its inner surface and has a figure 1 An inlet for the wire 10 is provided on the right-hand, otherwise closed end side, and an outlet for the wire 10 is arranged on the opposite, likewise otherwise closed end side. In addition, the cavit...

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Abstract

The invention relates to a method for non-contact determination of the temperature of a moving object with an unknown emissivity coefficient, in particular a wire conveyed along its longitudinal axis, the method comprising the steps of: guiding the The object passes through at least one radiation source emitting thermal radiation, wherein the object is largely or completely surrounded by the at least one radiation source; the object (10) passes through the object (10) when guiding the object through the radiation source by using at least one radiation detector performing spatially resolved bolometric measurements in the passed area; and determining the temperature of the moving object based on the spatially resolved bolometric measurements. The invention also relates to a corresponding device.

Description

technical field [0001] The invention relates to a method and a device for the contactless determination of the temperature of a moving body having an unknown emissivity coefficient, in particular a wire being conveyed along its longitudinal axis. Such wires are used, for example, as conductors for cables. The wire has a diameter between 0.1 and 100 mm and is conveyed along its longitudinal axis by suitable guides, for example to an extrusion device, in which an insulating sheath is applied to the wire. Primarily for extrusion processes, but also for example in preceding preheating, curing or hardening processes, a predetermined temperature is required for the moving wire. When manufacturing the core wire it is important that the insulation adheres to the wire. For this purpose, the wire is heated just before entering the extruder. Furthermore, a constant wire temperature is especially important when the insulation of the wire is foamed. This is especially the case for data...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00G01J5/08
CPCG01J5/0896G01J5/0096G01J5/0887G01J5/0022G01J5/802G01J2005/0077
Inventor H·斯考拉A·帕伽加西亚
Owner SIKORA GMBH