Visualized phase-array fire alarm system

Abstract

The invention discloses a visualized phase-array fire alarm system which comprises a detection terminal and a monitoring terminal, wherein the detection terminal comprises a thermal radiation array sensor, a visible light camera, an external alarm data interface module and a signal composite processing transmission module, the monitoring terminal is composed of a data storage processor and a display or a computer with a display screen, and the detection terminal is connected to the monitoring terminal through a signal wire. The invention provides a visualized phase-array fire alarm system which is based on a complicated environment, regionally detects and displays temperature changes, regionally sets up alarm parameters, is compatible with various fire detection signal data and low in cost, and has a self-learning function; and according to the invention, the early property, visualization, intelligentization and systematization of fire alarming are realized, and the false alarm rate and cost of the system can be greatly reduced, thereby reducing the fire loss.

Description

technical field [0001] The invention relates to a fire alarm system, in particular to a visual phase array fire alarm system, which is used for early fire pre-alarm and fire alarm in complex environment spaces. Background technique [0002] At present, the detection technologies used in commonly used fire alarm systems mainly include smoke detection, carbon monoxide detection, flame detection, and temperature detection. It starts from the temperature rise, and simultaneously or gradually generates smoke or open flames, and no matter what kind of fire process, temperature rise is a necessary factor for fire, so the general detection technology can only issue an alarm after the fire occurs, and the false alarm rate is high Less reliable. Regardless of the type of combustion, such as flash ignition, ignition, spontaneous combustion, explosion, etc., one of the necessary conditions for its initiation is related to the appropriate temperature. The increase in the temperature of ...

AI Technical Summary

Problems solved by technology

Although infrared thermal imaging fire detection technology is intuitive and reliable, its high-resolution thermal imaging chip lacks the level and three-dimensionality of visible light images due to the very weak thermal image distribution signal of the infrared radiation of each part of the target object, so some research is required. Image brightness and contrast control, actual correction and false color rendering, etc., the processed signal is sent to the video signal forming part for data conversion and forms a standard thermal imaging video signal, and finally displays the measured target through the TV screen or monitor Infrared thermal imaging, its complex technology leads to high cost, especially the thermal imaging chip has higher requirements on the working environment temperature. In higher temperature places, in order to ensure the detection accuracy, it is often necessary to install cooling devices such as water circulation, such as "SAT-CK350 -W Infrared thermal imaging monitoring system" is a water-cooled thermal imaging camera adapted to monitor in harsh environments (mainly for high temperature), the probe has a casing with a water-cooled jacket, which greatly limits the scope of its application. At present, it is generally only It is used in large-space and long-distance professional fire protection in forests and cities where the detection environment is relatively single. At the same time, the display method of thermal imaging superimposed video imaging will greatly affect the display clarity of the video, and seriously affect the normal viewing of video images.

The patent 200810171454.X infrared fire detection system invented by B. E. Cole of Honeywell International Corporation, although considering the high cost of high-resolution thermal imaging chips, early fire alarm, and use in complex environments, the invention has no Visible light image matching is not convenient for setting alarm parameters of each field of view at any time and intuitive observation. The realization cost of multi-lens array focusing and lens blocking is very high, and the operation reliability is poor, so it is difficult to promote in large quantities.

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