A fire detection and alarm system and method for confined spaces based on electronic nose technology

A technology for confined space and fire detection, applied in fire alarms, alarms, instruments, etc., can solve problems such as unfavorable online updating of network models, missed reports, and long training time, achieve excellent training speed, facilitate real-time applications, and fault tolerance. powerful effect

Inactive Publication Date: 2015-08-12
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This type of algorithm takes a long time to train and has a complex structure, which is not conducive to updating the network model online, resulting in false positives and false negatives

Method used

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  • A fire detection and alarm system and method for confined spaces based on electronic nose technology
  • A fire detection and alarm system and method for confined spaces based on electronic nose technology
  • A fire detection and alarm system and method for confined spaces based on electronic nose technology

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Embodiment Construction

[0031] Such as figure 1As shown, the fire detection and alarm system for confined spaces based on the electronic nose technology of the present invention includes: a sampling tube, a filter device, three gas sensors, a temperature sensor, a sensor power supply unit, a sensor control unit, a signal acquisition unit, a signal conditioning unit, and a monitoring host , sound and light alarm device, flow meter, vacuum pump, three-way solenoid valve and exhaust gas treatment device; a filter device is added at the end of the sampling pipe and a flow meter is used to control the gas flow rate through the three gas sensors.

[0032] The sensor power supply unit provides power for the three gas sensors and the temperature sensor, and its output terminals are connected to the sensors; the sensor control unit controls the opening and closing of the three gas sensors and the temperature sensors, and its output terminals are connected to the sensors; the three sensors are O 2 Sensors, CO ...

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Abstract

The invention provides an enclosed space fire hazard detection alarm system and an alarm method based on an electronic nose technology. The alarm system comprises a sampling pipe, a filter device, three gas sensors, a temperature sensor, a sensor power supply unit, a sensor control unit, a signal collecting unit, a signal conditioning unit, a monitoring host, a sound-light alarm device, a flowmeter, a vacuum pump, a three-way electromagnetic valve and a tail gas processing device. By means of the system and the method, real-time on-line analysis and study and intelligent judgement can be achieved, a fire hazard can be found in a very early stage, false alarm rate and report-failure rate can be reduced, and damage to persons and equipment in an enclosed space of the first hazard can be reduced to the larger extent.

Description

technical field [0001] The invention belongs to the technical field of fire detection, and in particular relates to a fire detection and alarm system and method in a confined space based on electronic nose technology. Background technique [0002] Confined space refers to an unconventional limited space with restricted entrance and exit, poor natural ventilation, and relative isolation from the outside world. Common confined spaces mainly include some power distribution cabinets, machine rooms, material warehouses, aircraft cargo compartments and space capsules. Once a fire occurs in such a confined space, the generated smoke, poisonous gas and heat will inevitably gather in a large amount in a short period of time, causing great damage to personnel and equipment. Therefore, early fire detection and alarm is particularly important. [0003] At present, in the confined space, the alarm is mainly aimed at the change of the visible smoke concentration during the fire, and it ...

Claims

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Application Information

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IPC IPC(8): G08B17/00G08B17/117
Inventor 张永明王晓伟方俊王进军
Owner UNIV OF SCI & TECH OF CHINA
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