IT1266048B1 - Proximity sensor of the capacitive type - Google Patents

Proximity sensor of the capacitive type

Info

Publication number
IT1266048B1
IT1266048B1 IT92PI000006A ITPI920006A IT1266048B1 IT 1266048 B1 IT1266048 B1 IT 1266048B1 IT 92PI000006 A IT92PI000006 A IT 92PI000006A IT PI920006 A ITPI920006 A IT PI920006A IT 1266048 B1 IT1266048 B1 IT 1266048B1
Authority
IT
Italy
Prior art keywords
sensor
capacitive type
proximity sensor
plates
flat plates
Prior art date
Application number
IT92PI000006A
Other languages
Italian (it)
Inventor
Adriano Franchi
Aldo Martolini
Original Assignee
Syel Di Franchi A Martolini A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Syel Di Franchi A Martolini A filed Critical Syel Di Franchi A Martolini A
Priority to IT92PI000006A priority Critical patent/IT1266048B1/en
Publication of ITPI920006A0 publication Critical patent/ITPI920006A0/en
Priority to EP93101933A priority patent/EP0556682B1/en
Priority to AT93101933T priority patent/ATE160864T1/en
Priority to DE69315452T priority patent/DE69315452T2/en
Publication of ITPI920006A1 publication Critical patent/ITPI920006A1/en
Application granted granted Critical
Publication of IT1266048B1 publication Critical patent/IT1266048B1/en

Links

Landscapes

  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

A proximity sensor of the capacitive type comprises two adjacent flat plates facing the object to be detected and a screening and stabilizing plate shaped in such a way as to cover the top and side of one of the said flat plates. The sensor is supported on a printed electrical circuit board, the aforesaid plates consisting of portions of the metallic layers of the said board. The resulting structure provides a high degree of stability and reliability, practically cancelling the effect of spurious capacitance between the plates, and thus allowing the sensor to be used both in environments with changeable climatic conditions and in measuring the distance of objects made from various kinds of material. <IMAGE>
IT92PI000006A 1992-02-10 1992-02-19 Proximity sensor of the capacitive type IT1266048B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IT92PI000006A IT1266048B1 (en) 1992-02-19 1992-02-19 Proximity sensor of the capacitive type
EP93101933A EP0556682B1 (en) 1992-02-10 1993-02-08 Electronic capacitive sensor bar device
AT93101933T ATE160864T1 (en) 1992-02-10 1993-02-08 ELECTRONIC CAPACITIVE SENSOR BAR DEVICE
DE69315452T DE69315452T2 (en) 1992-02-10 1993-02-08 Electronic capacitive sensor rod device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT92PI000006A IT1266048B1 (en) 1992-02-19 1992-02-19 Proximity sensor of the capacitive type

Publications (3)

Publication Number Publication Date
ITPI920006A0 ITPI920006A0 (en) 1992-02-19
ITPI920006A1 ITPI920006A1 (en) 1993-08-19
IT1266048B1 true IT1266048B1 (en) 1996-12-20

Family

ID=11393714

Family Applications (1)

Application Number Title Priority Date Filing Date
IT92PI000006A IT1266048B1 (en) 1992-02-10 1992-02-19 Proximity sensor of the capacitive type

Country Status (1)

Country Link
IT (1) IT1266048B1 (en)

Also Published As

Publication number Publication date
ITPI920006A0 (en) 1992-02-19
ITPI920006A1 (en) 1993-08-19

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19980216