Fire detection system and fire detection method
A fire detection system includes a transmitter including a light source that sends an optical signal and a receiver including a detector that detects the optical signal sent from the light source through a predetermined light propagation section, a signal processing unit that calculates at least one of a first gas concentration, a first smoke concentration, and a first temperature in the light propagation section based on the optical signal, a sensor that acquires at least one of a second gas concentration, a second smoke concentration, and a second temperature in the surroundings, and a determiner that determines whether there is a fire by comparing at least one of the first gas concentration, the first smoke concentration, and the first temperature with at least one of the second gas concentration, the second smoke concentration, and the second temperature in the surroundings.
1. A fire detection system comprising:
a transmitter including a light source configured to send an optical signal; and a receiver comprising:
a detector configured to detect the optical signal sent from the light source through a predetermined light propagation section;
a signal processing unit configured to calculate at least one of a first gas concentration, a first smoke concentration, and a first temperature in the light propagation section based on the optical signal detected by the detector;
a sensor configured to acquire at least one of a second gas concentration, a second smoke concentration, and a second temperature in the surroundings; and
a determiner configured to determine whether or not there is a fire by comparing at least one of the first gas concentration, the first smoke concentration, and the first temperature calculated by the signal processing unit with at least one of the second gas concentration, the second smoke concentration, and the second temperature in the surroundings acquired by the sensor,
wherein the transmitter and the receiver are integrated as a transceiver,
a first reflection unit disposed at a predetermined distance from the transceiver, wherein the predetermined light propagation section is formed between the transceiver and the first reflection unit, and
the optical signal sent from the light source of the transceiver reciprocates in the predetermined light propagation section between the transceiver and the first reflection unit.
2. The fire detection system according to claim 1 , wherein
the sensor includes at least one of a gas sensor configured to measure the second gas concentration around the receiver, a smoke detector configured to measure the second smoke concentration around the receiver, and a temperature sensor configured to measure the second temperature around the receiver.
3. The fire detection system according to claim 1 , wherein
the signal processing unit and the sensor are integrated as a hybrid processing unit, and
the transceiver further includes a second reflection unit configured to reflect the optical signal sent from the light source and an optical switch configured to switch between a direction of the first reflection unit and a direction of the second reflection unit and then emit the optical signal sent from the light source, and
the hybrid processing unit is configured to calculate
at least one of the first gas concentration, the first smoke concentration, and the first temperature in the light propagation section based on the optical signal reflected from the first reflection unit and detected by the detector, and
at least one of the second gas concentration, the second smoke concentration, and the second temperature in the surroundings based on the optical signal reflected from the second reflection unit and detected by the detector.
4. The fire detection system according to claim 1 , wherein
the determiner is configured to calculate a difference between at least one of the first gas concentration, the first smoke concentration, and the first temperature in the predetermined light propagation section of the optical signal calculated by the signal processing unit and at least one of the second gas concentration, the second smoke concentration, and the second temperature in the surroundings acquired by the sensor, respectively, and determine that the fire has occurred when each difference is greater than a threshold.
5. The fire detection system according to claim 4 , wherein
the determiner is configured to calculate an amount of change in the difference per unit time and determine that the fire has occurred when the calculated amount of change is greater than a threshold.
6. A fire detection method comprising:
sending an optical signal from a light source by a transmitter;
detecting the optical signal sent from the light source through a predetermined light propagation section by a receiver;
calculating at least one of a first gas concentration, a first smoke concentration, and a first temperature in the light propagation section based on the detected optical signal by the receiver;
acquiring at least one of a second gas concentration, a second smoke concentration, and a second temperature in the surroundings by the receiver; and
determining whether or not there is a fire by comparing at least one of the calculated first gas concentration, the calculated first smoke concentration, and the calculated first temperature with at least one of the acquired second gas concentration, the acquired second smoke concentration, and the acquired second temperature in the surroundings by the receiver,
wherein the transmitter and the receiver are integrated as a transceiver,
wherein a first reflection unit is disposed at a predetermined distance from the transceiver,
wherein the predetermined light propagation section is formed between the transceiver and the first reflection unit, and
wherein the optical signal sent from the light source of the transceiver reciprocates in the predetermined light propagation section between the transceiver and the first reflection unit.