Multi-component combined linear temperature-sensitive fire detector and its realization method

Abstract

The invention relates to a multivariate combined-type linear temperature-sensing fire detector which comprises a sensitive unit and a microprocessor, wherein a flat three-core structure is adopted by the sensitive unit; the head end of a three-core wire in the sensitive unit is connected with the corresponding end of a binding post of the microprocessor; and a microprocessor circuit comprises a front end circuit, a filter circuit, an amplifying circuit, a communication drive circuit, a code sending control circuit, a return code receiving circuit, a main central processing unit (CPU), an alarm output control circuit and an alarm region display circuit. An implementation method of the multivariate combined-type linear temperature-sensing fire detector comprises the steps of: according to the comparison between the temperature data which are acquired by the sensitive unit in real time and the fire combustion data which are stored in the main CPU in advance, obtaining the temperature state of a monitored region, and realizing differential fixed temperature alarm and self-adaptive compensation of ambient temperature.

Description

technical field [0001] The invention belongs to the technical field of fire detection and alarm in the discipline of safety engineering, and relates to a fire detection system mainly used in the early detection of fires and various types of long tunnels, conveyor belts, large-scale production workshops, warehouses, rail transit and other harsh environments in industrial fields such as electric power, metallurgy, and petrochemical industries. Place, due to the overheating of various electric facilities, equipment or articles, and the burning of open flames, it is a multi-combined linear temperature-sensitive fire detector and its realization method for monitoring and alarming before the fire occurs or in the initial abnormal state. Background technique [0002] At present, there are mainly three types of mature linear temperature-sensitive fire detectors used in electric power, metallurgy, petrochemical and other industrial fields: switch value linear constant temperature fire...

AI Technical Summary

Problems solved by technology

[0003] In the current engineering application of linear temperature-sensitive fire detectors, there are mainly the following problems: First, due to the restriction of the structure and detection mechanism, the protection radius of a detector is limited, so the protection range of the detector is limited, and the project is increased. The cost of equipment reduces the cost performance of engineering applications

Second, because most of the application places are places with strong electromagnetic interference, the linear temperature-sensitive fire detector is susceptible to electromagnetic interference. In order to prevent false alarms, the sensitivity of the detector is lowered. In some cases, the differential temperature function is simply shielded, and only the constant temperature alarm function is retained, which makes the detector unable to realize early fire detection and delays the best time for alarm and fire fighting and rescue.

Fourth, the linear temperature-sensitive fire detectors currently used do not have the functions of monitoring the temperature of the area and displaying the alarm position, thus limiting the use length and application places of the detectors

[0004] Due to the existence of the above problems, the application range of linear temperature-sensitive fire detectors is greatly limited, and the early fire response ability of the detectors is affected.

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