EP 0515635 B1 19960313 - DIRECTION SENSITIVE COUNTING AND SWITCHING DEVICE
Title (en)
DIRECTION SENSITIVE COUNTING AND SWITCHING DEVICE
Title (de)
RICHTUNGSEMPFINDLICHE ZÄHL- UND SCHALTVORRICHTUNG
Title (fr)
DISPOSITIF COMPTEUR ET COMMUTATEUR SENSIBLE AUX DIRECTIONS
Publication
Application
Priority
- DE 4040811 A 19901214
- DE 9100994 W 19911216
Abstract (en)
[origin: WO9210812A1] A direction selective counting and switching device should be able to distinguish people and/or objects from each other and according to the direction in which they are moving, count them and/or trigger switching processes, and be installed without essential additional constructional alterations. A detector (1) designed as a multiple-element sensor shaped as one or several double rows is arranged behind a convex lens (2), so that the detection area (4) located in front of the convex lens is subdivided according to the detector shape in several small fields of view (4.1-4.15). A pin diaphragm (3), arranged preferably centrally before the convex lens, prevents the incidence of diffused light and flat rays thereon and total reflection within the lens. This device is useful in situations where people and/or objects must be separately counted according to the direction in which they are moving, for example to detect the extent of occupation of public transport means, as an optical switch, to control traffic lights and to monitor railway tracks.
IPC 1-7
IPC 8 full level
G07C 9/00 (2006.01); G08B 13/19 (2006.01); G08B 13/194 (2006.01)
CPC (source: EP US)
G07C 9/00 (2013.01 - EP US); Y10S 250/01 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9210812 A1 19920625; AT E135480 T1 19960315; CA 2075899 A1 19920615; DE 4040811 A1 19920709; DE 59107554 D1 19960418; EP 0515635 A1 19921202; EP 0515635 B1 19960313; JP H05508252 A 19931118; US 5313060 A 19940517
DOCDB simple family (application)
DE 9100994 W 19911216; AT 92901333 T 19911216; CA 2075899 A 19911216; DE 4040811 A 19901214; DE 59107554 T 19911216; EP 92901333 A 19911216; JP 50137592 A 19911216; US 92027192 A 19921014