APPARATUS FOR CONFIRMING STOP OF MOVABLE PORTION

Title:

APPARATUS FOR CONFIRMING STOP OF MOVABLE PORTION

Document Type and Number:

WIPO Patent Application WO/1996/024852

Kind Code:

A1

Abstract:

Detection means detects the change of an impedance occurring in a coil in response to irregularities on the surface of a movable portion, and outputs its detection signal. A speed judgement circuit receives the detection signal from the detection means, and continuously generates a high level output signal when the detection signal changes after a predetermined time interval. A level detection circuit receives the detection signal, and generates a high level output signal when the detection signal is above a predetermined level. An AND circuit receives the output signals from the speed judgement circuit and the level detection circuit, and generates the output signal of the AND calculation. A movable portion stop report is made on the basis of confirmation that the delay of the report of the stop of the movable portion is reduced and moreover, a coil is normally combined with the movable portion, and the confirmation that the movable portion has been monitored immediately before the stop of the movable portion.

Inventors:

SHIRAI TOSHIHITO (JP)
ANZAI HIROJI (JP)
FUTSUHARA KOICHI (JP)

Application Number:

PCT/JP1995/000165

Publication Date:

August 15, 1996

Filing Date:

February 07, 1995

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIPPON SIGNAL CO LTD (JP)
SHIRAI TOSHIHITO (JP)
ANZAI HIROJI (JP)
FUTSUHARA KOICHI (JP)

International Classes:

B23Q11/00; B23Q11/08; F16P3/00; F16P3/08; F16P3/12; (IPC1-7): G01P13/00

Foreign References:

JPS5391764A

1978-08-11

Other References: