Alarm logical designing method for airplane engine cabin fire alarm detecting system
A technology for engine compartment and fire alarm detection, applied in the aviation field, can solve problems such as delay in fire extinguishing, loss of life and property, etc., and achieve the effect of reducing false alarms in the system
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[0017] Example 1
[0018] Aircraft engine compartment fire detection system mainly includes three parts: fire detector, fire controller and alarm system, such as figure 2 shown. In a certain type of aircraft engine compartment, two pneumatic fire detectors are arranged in parallel to form a dual-circuit arrangement. In order to ensure that the two fire detectors work independently, the two detectors are powered independently. The warning system includes fire warning lights, audio equipment, video warning devices, a central maintenance system and a flight parameter recorder.
[0019] The fire controller based on the principle of single-chip microcomputer is selected, and the state of the fire alarm detectors in the A and B circuits is read according to the time interval of 100ms, and then the logical judgment is made, and then the judgment result is sent to the alarm system. The fire controller realizes the logical judgment of the A and B loop fire detector signals through ...
Example Embodiment
[0022] Embodiment 2
[0023] Aircraft engine compartment fire detection system mainly includes three parts: fire detector, fire controller and alarm system, such as figure 2 shown. In a certain type of aircraft engine compartment, two pneumatic fire detectors are arranged in parallel to form a dual-circuit arrangement. In order to ensure that the two fire detectors work independently, the two detectors are powered independently. The warning system includes fire warning lights, audio equipment, video warning devices, a central maintenance system and a flight parameter recorder.
[0024] The fire controller based on the principle of single-chip microcomputer is selected to read the status of the fire detectors in the A and B circuits according to the time interval of 200ms, and then make logical judgments, and then send the judgment results to the alarm system. The fire controller realizes the logical judgment of the A and B loop fire detector signals through the internal so...
Example Embodiment
[0027] Embodiment 3
[0028] Aircraft engine compartment fire detection system mainly includes three parts: fire detector, fire controller and alarm system, such as figure 2 shown. In a certain type of aircraft engine compartment, two pneumatic fire detectors are arranged in parallel to form a dual-circuit arrangement. In order to ensure that the two fire detectors work independently, the two detectors are powered independently. The warning system includes fire warning lights, audio equipment, video warning devices, a central maintenance system and a flight parameter recorder.
[0029] The fire controller based on the principle of single-chip microcomputer is selected to read the status of the fire detectors of A and B circuits according to the time interval of 1000ms, and then make logical judgments, and then send the judgment results to the alarm system. The fire controller realizes the logical judgment of the A and B loop fire detector signals through the internal softw...
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