Title:
誘導近接センサ
Document Type and Number:
Japanese Patent JP4750439
Kind Code:
B2
Abstract:
The present invention concerns an inductive proximity sensor (D) comprising:a coil or inductance (L) arranged in the vicinity of the active surface or end of said sensor (D),means (C,S) for supplying the coil or inductance repeatedly with current,means (SP) for processing signals which correspond to the voltages (V) induced in said coil or inductance (L) when fed, said induced voltages (V) being influenced by the presence of objects or bodies (B) within a given detection area, depending on their distance and on their constituting material(s), and said coil or inductance (L) being part of a parallel LC circuit, whereby said supplying means consist basically of the capacity or capacitor (C) of the LC circuit, and whereby a voltage signal amplitude measurement is performed at a given time or moment in time after each switching from the first (charging of C) to the second state (discharge of C) and the result of said measurement is computed in connection with reference measurements in order to calculate the distance to the active surface or end of the sensor (D), the nature of the constituting material(s), and/or a mass indicative value of the object(s) or body(ies) (B) located within the detection area.
More Like This:
Inventors:
Remy Kirschyud El Fale
Varadeimir Florob
Varadeimir Florob
Application Number:
JP2005078653A
Publication Date:
August 17, 2011
Filing Date:
March 18, 2005
Export Citation:
Assignee:
Saint-Stronitz
International Classes:
G01V3/10; H03K17/95; H01F5/00
Domestic Patent References:
| JP2501615A | ||||
| JP6164358A | ||||
| JP63316515A | ||||
| JP6013876A | ||||
| JP2004511924A |
Attorney, Agent or Firm:
Yoshio Kawaguchi
Makoto Ono
Katsuma Osaki
Mitsuaki Tsubokura
Makoto Ono
Katsuma Osaki
Mitsuaki Tsubokura