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Device for detecting metallically conductive parts

By using sensor units and digital evaluation circuits in non-conductive transport flows to detect magnetic field changes, generate recognition signals and connect the individual circuit components via a bus system, the fault finding and poor flexibility of existing devices when detecting metallic conductive parts is solved. problems, achieving more efficient identification and adjustment capabilities.

Active Publication Date: 2011-04-13
MESUTRONIC GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only does this hinder fault finding in the event of a fault, but it also affects flexibility when the entire installation needs to be adapted to changing operating conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] exist figure 1 and 2 The device shown schematically in includes two parts, OT and UT, one of which is designed as a U-shape and the other as a flat support. These two parts enclose a conveyor belt B which transports the objects to be inspected for unwanted metal parts therein through the device in the direction of the arrow shown. Transmitting coil S1 is arranged in component OT. Furthermore, a generator G for supplying the transmitter coil with alternating current and an electrical circuit A for deriving an identification signal for the metallic conductive parts contained in the conveyed goods are also arranged in the component OT. Two receiver coils S2 and S3 are arranged offset in the transport direction in the support UT. The embodiment and the arrangement of the coils are adapted to the application in a known manner, as is the form of the housing and the shape and form of the through-openings. Its interface leads to circuit assembly A in part OT via contacts, ...

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PUM

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Abstract

The invention relates to a device for generating a recognition signal in the event of the appearance of metallically conductive parts in an at least largely non-conductive transport flow. An electromagnetic alternating field is established, for example, by an alternating current generator, in a section of the transport flow to be monitored, by means of a transmitter coil system, the signal variations of the alternating field, triggered by a part passing by in the flow, being detected by a receiver coil system and converted into a recognition signal in an evaluation circuit. The individual system components are split into separate circuit modules which then co-operate by means of a bus system.

Description

technical field [0001] The invention relates to a device for generating an identification signal when a metallic conductive component is present in an at least largely non-conductive transport flow. Background technique [0002] Devices of this type generally work in such a way that an alternating electromagnetic field is created by means of an alternator through a system of transmitting coils in the section of the transport flow to be monitored, the signal change of which is triggered by the passage of the component by The receiving coil system detects and uses a subsequent evaluation circuit to derive an identification signal which triggers information and / or exclusion of the component. The use and design of such devices are known, for example, from German laid-open documents 37 14 009 A1 and 40 171 780 A1 and the prior art mentioned therein. This identification signal is used to actuate a protective device, such as an optical and / or acoustic signaling device, a disconnec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/10
CPCG01V3/104
Owner MESUTRONIC GMBH