Title:
RADIO
Document Type and Number:
Japanese Patent JP2023040832
Kind Code:
A
Abstract:
To preferentially transmit an abnormality signal with higher importance in a radio.SOLUTION: A fire alarm comprises: a detection unit which detects an abnormality; and a signal processing unit which executes carrier sense at the number of times corresponding to the abnormality detected by the detection unit and transmits a signal for notification of the abnormality after execution of the carrier sense. The signal processing unit starts the carrier sense at the number of times corresponding to a first abnormality, and when the detection unit detects a second abnormality with higher priority than that of the first abnormality during the execution of the carrier sense, transmits a signal for notification of the second abnormality instead of the first abnormality, or with the first abnormality. Moreover, the number of times of the carrier sense corresponding to the first abnormality is more than the number of times corresponding to second carrier sense.SELECTED DRAWING: Figure 8
Inventors:
MORITA EISEI
NAKAMURA TAKAOMI
NAKAMURA TAKAOMI
Application Number:
JP2021148009A
Publication Date:
March 23, 2023
Filing Date:
September 10, 2021
Export Citation:
Assignee:
NOHMI BOSAI LTD
International Classes:
G08B25/00; G08B17/00; G08B21/12
Attorney, Agent or Firm:
Asahi Patent Office
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