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Factor 1 inductive sensor device

A technology for detection devices and coefficients, applied in measuring devices, electric/magnetic exploration, re-radiation of sound waves, etc., can solve the problems of unmentioned adjustment methods, large temperature deviation of detection signals, unmentioned detector manufacturing methods, etc.

Active Publication Date: 2018-12-21
桑斯特罗尼克简易股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, neither the method of manufacturing the detector nor its adjustment is mentioned in this document
[0027] In addition, the circuit structure proposed in the document EP1530064 uses the original form of the detection signal, especially the non-filtered detection signal, and the dynamic performance of the detection signal is weak, and the temperature deviation of the detection signal is large

Method used

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  • Factor 1 inductive sensor device
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Embodiment Construction

[0037] Figure 4 And the partial map 5 functionally shows the inductive proximity or presence detection device 1 operating in the "factor 1" mode.

[0038] The detection device 1 essentially has an LC resonant circuit 2 on the one hand and an operating chain of acquisition and processing devices 4, 5, 6, 12 for acquiring and processing the response signal (free oscillation) on the other hand, the LC resonant circuit being driven by an excitation A pulse generator 3 is powered, defining successive and repeated detection phases, a response signal is sent in each detection phase by said LC resonant detection circuit 2, the operating chain notably comprising a sampling device 4 and an analog-to-digital conversion circuit 6, said detection Finally, the device also has an evaluation device 7 , 8 for evaluating at least one time lag value of the processed signal and providing a detected or undetected logic signal or information, in particular by comparison.

[0039] The detection de...

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Abstract

The invention relates to a "factor 1" and inductive sensor device (1) comprising an LC resonant circuit (2) powered by a suitable generator (3), an operational chain of means (4, 5, 6) of acquisitionby sampling and processing of the response signal, and a functional set of means (7, 8) of evaluating at least one temporarily set value of the processed signal and supplying detection or non-detection information. Said sensor device (1) is characterized in that the acquisition and processing means comprise analog means (5) for filtering and / or amplifying the sampled response signal, and a means (10) for compensating the temperature drift of the response signal by correcting the sampled signal following the digital conversion thereof, associated with or comprising a temperature sensor (10').

Description

Technical field [0001] The invention relates to the field of inductive detection devices that allow detecting the presence of metallic objects at or near a given location or site, in particular detectors used in industry based on the analysis of signals provided by at least one LC resonant circuit. Background technique [0002] Such detectors have been commercialized by the applicant for many years and are described, for example, in the documents FR2827677, EP1580889, EP1580536, EP1965177 and EP2546614. [0003] The present invention is more particularly directed to a "Factor 1" and inductive proximity or presence detection device, i.e. designed and operated to detect different primary metallic materials (steel, aluminum, brass, copper, zinc, etc.) Preferably very small changes in detection distance are provided. [0004] In the case of conventional inductive detectors, the nominal detection distance Sn is always given for steel targets (Standard 60947-5-2). For other meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/10
CPCG01V3/101G01D5/2046H03K17/9502H03K17/9525H03K17/9537H03K2017/9527
Inventor T·罗兹
Owner 桑斯特罗尼克简易股份公司
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