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

A technology of fire detectors and compound lines, applied in the direction of electric fire alarms, etc., can solve the problem of low sensitivity of distributed line-type optical fiber temperature-sensitive fire detectors and the inability of switch-value cable-type line-type temperature-sensitive fire detectors Problems such as use and limitation of the application range of cable-type linear temperature-sensitive fire detectors, to achieve multi-level fire detection and multi-level alarm functions, high stability, and suitable for popularization and application.

Active Publication Date: 2017-05-31
JIANGSU ZHONGSHI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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

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Embodiment 1

[0039] System embodiment 1: such as figure 1 As shown, the high-sensitivity composite wire-type temperature-sensitive fire detector provided in this embodiment includes a temperature-sensitive component, a signal processing unit and a terminal resistor;

[0040] The temperature-sensing component includes an analog cable-type linear temperature-sensing cable and several temperature sensing modules connected in parallel, and the distance between adjacently placed temperature-sensing modules is not more than 1 meter, that is, any distance between the temperature-sensing modules in parallel The maximum distance between D (max) ≤ 1 meter;

[0041] The signal processing unit includes an arithmetic processing device, and a first electrical signal measuring device, a second electrical signal measuring device and an alarm output device connected to the arithmetic processing device;

[0042] The terminal resistance includes a terminal resistance R1 connected in parallel with a pluralit...

Embodiment 2

[0051] The alarm method for the above-mentioned high-sensitivity composite line-type temperature-sensitive fire detector provided in Embodiment 2 of the method comprises the following steps:

[0052] The steps of real-time acquisition of semaphore: the first electrical signal measuring device is used to collect the resistance signal value of the line connected in parallel with the temperature sensing module and the terminal resistor R1; The line connected in parallel with the terminal resistor R2 performs resistance value semaphore collection.

[0053] Steps of operation processing: through the operation processing device, carry out operation processing on the signal quantities measured by the first electric signal measuring device and the second electric signal measuring device, and judge the working state of the detector, and the working state includes normal operation status, fire status, and fault status, including:

[0054] Judgment steps of normal working state: when th...

Embodiment 3

[0061] The alarm method for the above-mentioned high-sensitivity composite linear temperature-sensitive fire detector provided in Embodiment 3 of the method comprises the following steps:

[0062] The steps of real-time acquisition of semaphore: the first electrical signal measuring device is used to collect the resistance signal value of the line connected in parallel with the temperature sensing module and the terminal resistor R1; The line connected in parallel with the terminal resistor R2 performs resistance value semaphore collection.

[0063] Steps of operation processing: through the operation processing device, carry out operation processing on the signal quantities measured by the first electric signal measuring device and the second electric signal measuring device, and judge the working state of the detector, and the working state includes normal operation status, fire status, and fault status, including:

[0064] Judgment steps of normal working state: when the r...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B17/06
CPCG08B17/06
Inventor 何晓美董泽华
Owner JIANGSU ZHONGSHI ELECTRONICS
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