Fire alarm device inspection method and fire alarm device
A fire alarm apparatus according to an embodiment of the present invention may include a plurality of first detectors, each first detector detecting an occurrence of a fire and each first detector being activated at every first time, a plurality of second detectors, each second detector detecting the occurrence of the fire and each second detector being activated at every second time different from the first time, a repeater, a receiver, and a first server, and in the checking mode, the receiver may transmit a checking signal to the plurality of first detectors or the plurality of second detectors and activated detectors among the plurality of first detectors and the plurality of second detectors may receive the checking signal and transmit a response signal to the receiver.
1 . A fire alarm apparatus comprising:
a plurality of first detectors, each first detector detecting an occurrence of a fire and each first detector being activated at every first time;
a plurality of second detectors, each second detector detecting the occurrence of the fire and each second detector being activated at every second time different from the first time;
a repeater that performs communication with the plurality of first detectors and the plurality of second detectors;
a receiver that performs the communication with the repeater and operates in a checking mode; and
a first server that performs the communication with the receiver, wherein
in the checking mode, the receiver transmits a checking signal to the plurality of first detectors or the plurality of second detectors and activated detectors among the plurality of first detectors and the plurality of second detectors receive the checking signal and transmit a response signal to the receiver.
2 . The apparatus of claim 1 , wherein
each of the plurality of first detectors includes a first synchronization circuit,
each of the plurality of second detectors includes a second synchronization circuit, and
the receiver includes a synchronization circuit.
3 . The apparatus of claim 2 , wherein
an internal time of each of the first synchronization circuit, the second synchronization circuit, and the synchronization circuit is synchronized based on a synchronization signal.
4 . The apparatus of claim 3 , wherein
the first time and the second time are counted based on the internal time.
5 . The apparatus of claim 3 , wherein
each of the plurality of first detectors is simultaneously activated at every first time based on the internal time, and
each of the plurality of second detectors is simultaneously activated at every second time based on the internal time.
6 . The apparatus of claim 1 , wherein
the checking mode operates based on an external signal provided to the receiver.
7 . The apparatus of claim 1 , wherein
the plurality of first detectors and the plurality of second detectors operate in the same frequency band.
8 . The apparatus of claim 1 , wherein an activation time at which the plurality of first detectors are activated and an activation time at which the plurality of second detectors are activated do not overlap.
9 . The apparatus of claim 1 , wherein, when activated at the first time, each of the plurality of first detectors monitors for the checking signal for a predetermined time, and, when activated at the second time, each of the plurality of second detectors monitors for the checking signal for the predetermined time.
10 . The apparatus of claim 9 , wherein the predetermined time is from 2 to 6 milliseconds.
11 . The apparatus of claim 4 , wherein the plurality of first detectors, the plurality of second detectors, and the receiver transmit and receive synchronization signals at predetermined time intervals such that the synchronization circuit included in each of the first detectors, the second detectors, and the receiver does not have an error of 0.1 seconds or more in 24 hours.
12 . The apparatus of claim 1 , wherein the first time corresponds to a first activation interval between successive activations of each first detector, and wherein the second time corresponds to a second activation interval, different from the first activation interval, between successive activations of each second detector.
13 . The apparatus of claim 12 , wherein the first activation interval is 6 seconds, and the second activation interval is 6.1 seconds.
14 . A fire alarm apparatus checking method comprising:
a step in which a plurality of first detectors are activated at every first time;
a step in which a plurality of second detectors are activated at every second time different from the first time; and
a step in which a receiver operates in a checking mode, wherein
the step in which the receiver operates in the checking mode includes
a step in which the receiver transmits a checking signal to the plurality of first detectors or the plurality of second detectors, and
a step in which activated detectors of the plurality of first detectors and the plurality of second detectors receive the checking signal and transmit a response signal to the receiver.
15 . The method of claim 14 , further comprising:
a step in which internal times of the plurality of first detectors, the plurality of second detectors, and the receiver are synchronized.
16 . The method of claim 15 , further comprising:
a step in which the first time is counted based on the internal time; and
a step in which the second time is counted based on the internal time.
17 . The method of claim 15 , wherein
the step in which the plurality of first detectors are activated at every first time includes a step in which the plurality of first detectors are simultaneously activated at every first time based on the internal time, and
the step in which the plurality of second detectors are activated at every first second time includes a step in which the plurality of second detectors are simultaneously activated at every second time based on the internal time.
18 . The method of claim 14 , wherein
the step in which the receiver operates in the checking mode includes a step in which the checking mode is activated based on a signal provided from the outside.