Linear temperature sensing fire detector with electronic switch assembly and alarming method thereof

A technology of fire detectors and electronic switches, which is applied to electric fire alarms, thermometers and instruments using electric/magnetic elements that are directly sensitive to heat, can solve the problems of reducing the reliability and sensitivity of detector alarms, Achieve the effect of eliminating low alarm reliability and sensitivity
CN101656010AActive Publication Date: 2010-02-24SURELAND IND FIRE SAFETY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SURELAND IND FIRE SAFETY
Publication Date
2010-02-24

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Abstract

The invention discloses a linear temperature sensing fire detector with an electronic switch assembly and an alarming method thereof. The linear temperature sensing fire detector and the alarm methodthereof can detect whether a linear temperature sensing element has a broken circuit or not by turning off the electronic switch assembly. Meanwhile, whether a fire alarming signal is sent or not is determined according to a condition whether an electrical parameter (or a sampling value) detected by a switching box exceeds an alarming threshold value or not when the electronic switch assembly is in an on state, thus the state of the linear temperature sensing element can be detected and judged at any time, and the problem of lower alarming reliability and sensitivity under the condition of anopen circuit can also be eliminated.
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Description

technical field

[0001] The invention relates to a line-type temperature-sensing fire detector and an alarm method thereof, in particular to a line-type temperature-sensing fire detector with an electronic switch assembly and an alarm method thereof. Background technique

[0002] At present, the commonly used linear temperature-sensing fire detector with NTC (negative temperature coefficient) characteristics is a widely used fire detector, which mainly consists of a linear temperature sensing element with NTC characteristics and one end connected to the linear temperature sensing element. , which can detect the temperature or alarm electrical parameters (or sampling values) of the linear temperature sensing element in real time, and send out a fire alarm signal according to the size of the temperature or the alarm electrical parameters (or sampling values). The other end of the element is composed of a terminating resistor that monitors the disconnection of the linear tempera...

Claims

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