A high-sensitivity composite linear temperature-sensitive fire detector and its alarm method

Abstract

The invention discloses a high-sensitivity composite linear heat fire detector. The high-sensitivity composite linear heat fire detector comprises a temperature-sensitive component, a signal processing unit and a terminal resistor, wherein the temperature-sensitive component comprises an analog quantity cable type linear temperature-sensitive cable and a plurality of temperature sensing modules; the temperature sensing modules are adjacent to one another and are connected to one another in parallel; the distance between each two temperature sensing modules is not greater than 1 meter; and the stability and the reliability of the detector are improved. Compared with a single multi-point cable type linear heat fire detector, the high-sensitivity composite linear heat fire detector has the characteristic that the sensitivity is improved greatly. Moreover, the invention provides an alarming method for the high-sensitivity composite linear heat fire detector. By the high-sensitivity composite linear heat fire detector and the alarming method thereof, fusion complementary of constant-temperature alarming and differential-temperature alarming is realized by multi-data fusion on the basis that a normal running state, a fire hazard state and a fault state are judged accurately, uninterrupted fire hazard detection is realized, and multi-level fire hazard detection and multi-level alarming functions are fulfilled further. The high-sensitivity composite linear heat fire detector has quite high practicality and is suitable to be popularized and used.

Description

technical field [0001] The invention belongs to the technical field of fire detection and alarm in the discipline of safety engineering, and in particular relates to a compound linear temperature-sensitive fire detector and an alarm method thereof. Background technique [0002] At present, the cable-type linear temperature-sensitive fire detectors of the prior art have been widely used in the field of industrial fire protection. It mainly includes switching cable type linear temperature sensing fire detectors, analog cable type linear temperature sensing fire detectors, multi-point cable type linear temperature sensing fire detectors and distributed linear optical fiber temperature sensing fire detectors . The problem existing in the engineering application of the above products is that the switching cable-type linear temperature-sensitive fire detector cannot be used after alarming, and the analog-measurement cable-type linear temperature-sensitive fire detector is easily ...

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Problems solved by technology

The problem existing in the engineering application of the above products is that the switching cable-type linear temperature-sensitive fire detector cannot be used after alarming, and the analog-measurement cable-type linear temperature-sensitive fire detector is easily affected by the ambient The cable-type linear temperature-sensitive fire detector has a detection blind zone between two detection points, and the distributed linear fiber-optic temperature-sensitive fire detector has low sensitivity, and the detection unit length is usually 3m

[0003] Due to the existence of the above-mentioned problems, the scope of application of the cable-type linear temperature-sensitive fire detectors of the prior art is greatly limited

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