Title:
トンネル防災システム及び火災検知器
Document Type and Number:
Japanese Patent JP7336248
Kind Code:
B2
Abstract:
To provide a tunnel disaster prevention system and a fire detector that can suppress a false alarm by determining the reliability of a fire detector to which a fire signal has been transmitted.SOLUTION: A fire detector 12 connected to signal lines 14a and 14b from a disaster prevention reception panel 10 holds failure sign information containing a number of occurrences of a failure sign. The disaster prevention reception panel 10 estimates and determines reliability of the fire detector 12 by acquiring the failure sign information simultaneously when receiving a fire signal from the failure detector 12. If it is determined that the failure detector 12 is reliable, prescribed fire processing is performed when a fire signal is received from the same failure detector 12 again after the fire detector 12 is recovered. If deterioration in reliability is determined, the fire detector 12 that transmitted the fire signal is recovered, the prescribed fire processing is performed by determining there is a fire when receiving a fire signal from the fire detector 12 and the adjacent fire detector in the detection area as the fire detector 12. When this fire determination is not satisfied, it is determined there is not a fire and the fire processing is not performed.SELECTED DRAWING: Figure 1
Inventors:
Yasushi Sugiyama
Hidenari Matsukuma
Hidenari Matsukuma
Application Number:
JP2019081393A
Publication Date:
August 31, 2023
Filing Date:
April 23, 2019
Export Citation:
Assignee:
Hochiki Co., Ltd.
International Classes:
G08B17/00; G08B17/10; G08B29/14
Domestic Patent References:
| JP2018136726A | ||||
| JP2018169893A | ||||
| JP2002042264A | ||||
| JP2009026180A |
Attorney, Agent or Firm:
Susumu Takeuchi