Global patent index - EP 1045359 A1

EP 1045359 A1 2000-10-18 - Monitoring apparatus and control apparatus for traffic signal lights

Title (en)

Monitoring apparatus and control apparatus for traffic signal lights

Title (de)

Überwachungseinrichtung und Steuereinrichtung für Signallampen

Title (fr)

Dispositif de surveillance et appareil de contrôle pour feux de signalisation

Publication

EP 1045359 A1 (EN)

Application

EP 00201697 A

Priority

EP 95916024 A

Abstract (en)

The invention relates to monitoring apparatus and control apparatus for fail-safe monitoring for normal operation of traffic signal lights provided at an intersection or the like where a plurality of roads intersect. The illumination conditions of respective signal lights are detected using a sensor device, and when the number of illuminated or non illuminated signal lights is a predetermined number, a normal judgment output of logic value 1 corresponding to a high energy condition is generated while when the number of illuminated or non illuminated signal lights is not the predetermined number, an abnormal judgment output of logic value 0 corresponding to a low energy condition is generated. As a result, in the case for example of a fault in the monitoring apparatus so that the output stops, the resultant output condition is the same as for a danger condition due to a signal light abnormality. Hence extremely safe signal light monitoring and control is possible with excellent fail-safe characteristics. <IMAGE>

IPC 1-7 (main, further and additional classification)

G08G 1/097

IPC 8 full level (invention and additional information)

G08G 1/097 (2006.01)

CPC (invention and additional information)

G08G 1/097 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

EP 1045359 A1 20001018

INPADOC legal status

2005-05-04 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20041103

2001-07-04 [AKX] PAYMENT OF DESIGNATION FEES

- Ref Legal Event Code: AKX

- Free Format Text: DE FR GB

2000-10-18 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000512

2000-10-18 [AC] DIVISIONAL APPLICATION (ART. 76) OF:

- Ref Legal Event Code: AC

- Ref Document Number: 786752

- Country of Ref Document: EP

2000-10-18 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB