Title:
光警報器制御システム、光警報器制御方法及び光警報器
Document Type and Number:
Japanese Patent JP7166806
Kind Code:
B2
Abstract:
To connect an optical alarm to a district acoustic line by co-existence with a district acoustic device.SOLUTION: An optical alarm control system includes: district acoustic devices (district bells 50) each one of which is connected to a district acoustic line (district bell line 30) so as to ring when power supply is received; multiple optical alarms 60 each of which is connected to the district acoustic line so as to perform synchronous light emission when a voltage change of the district acoustic line is a voltage change with a predetermined pattern; and control means (fire receiver 10) connected to sensor lines 20 and the district acoustic lines so as to issue warning by ringing of the district acoustic device and light emission of the optical alarm 60 when a fire detection signal is received from a fire sensor 40 via the sensor line 20. The control means is constituted to alternately repeat a voltage change with the predetermined pattern and a restart of the power supply during issuing of warning by ringing of the district acoustic device, and to allow a length of a period (interruption period) for occurrence of a voltage change with the predetermined pattern to be a length for continuable ringing of the district acoustic device or a length for hearing as if ringing of the district acoustic device is continuing.SELECTED DRAWING: Figure 1
Inventors:
Tomohiro Okado
Application Number:
JP2018120440A
Publication Date:
November 08, 2022
Filing Date:
June 26, 2018
Export Citation:
Assignee:
Nittan Co., Ltd.
International Classes:
G08B17/00; G08B23/00
Domestic Patent References:
| JP2018190097A | ||||
| JP2017037433A | ||||
| JP2017041160A |
Foreign References:
| US5559492 | ||||
| US20170064786 |
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune