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Repair-reporting control method for resumable linear temperature-sensing detector

A technology of temperature-sensitive detectors and control methods, which is applied to thermometers, thermometer testing/calibration, and instruments using directly heat-sensitive electric/magnetic elements, and can solve problems such as reducing the reliability of detector alarms and false alarms , to achieve the effect of improving the reliability of the alarm and eliminating the problem of false alarms

Active Publication Date: 2009-06-24
SURELAND IND FIRE SAFETY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the use of the detector, as the number of alarms increases, the cumulative length LJ of the contact conduction area will continue to increase. Once the cumulative length LJ of the contact conduction area on the linear temperature sensing element exceeds a certain maximum value Lmax (that is, maximum contact conduction length), if the maintenance personnel are not reminded in time to repair or replace the linear temperature sensing element, the detector will not be able to meet the requirements of the national standard. reliability

Method used

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  • Repair-reporting control method for resumable linear temperature-sensing detector
  • Repair-reporting control method for resumable linear temperature-sensing detector

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Embodiment 1

[0027] The repair control method for the recoverable linear temperature-sensitive detector provided by the present invention is applicable to figure 1 Shown is a recoverable linear heat detector. The recoverable linear temperature sensing detector is composed of a linear temperature sensing element and a conversion box 7 connected to one end of the linear temperature sensing element; wherein the linear temperature sensing element includes two parallel detection conductors 1, 2 and An NTC or CTR characteristic material layer 3, a discontinuous conductive layer 4 and a meltable insulating layer 5 are arranged in parallel between two detection conductors 1, 2, wherein two detection conductors 1, 2 can be used in parallel, Winding or coaxial arrangement, and at least one of them is an elastic conductor, the value corresponding to the sampling value detected by the conversion box 7 to the linear temperature sensing element is the resistance value R.

[0028] At least one of the tw...

Embodiment 2

[0036] The recoverable linear temperature-sensitive detector in this embodiment has the same structure as the recoverable linear temperature-sensitive detector in Embodiment 1.

[0037] In order to more reliably determine whether the cumulative length LJ of the contact conduction area on the recoverable linear heat detector exceeds the maximum contact conduction length Lmax, the method for the recoverable linear heat detector provided in this embodiment The call control method includes the following steps in sequence:

[0038] 1) Input a functional relationship LJ=f(T0, R) or LJ=f(T0, U) in the conversion box 7 in advance, and input a maximum contact conduction length Lmax (or its corresponding sampling value) that meets the requirements of the national standard Or the stage of the resistance value R or the voltage value U) corresponding to the sampling value;

[0039] 2) Under manual or automatic conditions, the conversion box 7 detects the ambient temperatures T1 and T2 of ...

Embodiment 3

[0045] The recoverable linear temperature-sensitive detector in this embodiment has the same structure as the recoverable linear temperature-sensitive detector in Embodiment 1.

[0046] In order to more reliably determine whether the cumulative length LJ of the contact conduction area on the recoverable linear heat detector exceeds the maximum contact conduction length Lmax, the method for the recoverable linear heat detector provided in this embodiment The call control method includes the following steps in sequence:

[0047] 1) Input a functional relationship LJ=f(T0, R) or LJ=f(T0, U) in the conversion box 7 in advance, and input a maximum contact conduction length Lmax (or its corresponding sampling value) that meets the requirements of the national standard Or the stage of the resistance value R or the voltage value U) corresponding to the sampling value;

[0048] 2) Under manual or automatic conditions, the conversion box 7 detects at least two different ambient tempera...

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Abstract

The invention discloses a repair call control method for a recoverable linear temperature-sensitive detector. The method is to pre-input a functional relationship LJ=f(T0, R) or LJ=f(T0, U) and a maximum contact conduction length Lmax that meets the requirements of the national standard in the conversion box, and then the linear temperature sensing element is located When the ambient temperature is T0, the conversion box detects the resistance value R or voltage value U corresponding to the sampling value between the detection conductors, and substitutes it into the functional relationship LJ=f(T0, R) or LJ=f(T0, U) Calculate the cumulative length LJ of the contact conduction area on the linear temperature sensing element, and finally output the maintenance reminder signal according to whether LJ is greater than or equal to the maximum contact conduction length Lmax, so as to eliminate in time the cumulative length of the contact conduction area exceeding The problem of false alarms caused by the maximum contact conduction length Lmax can improve the alarm reliability of the detector.

Description

technical field [0001] The invention relates to a repair call control method for a recoverable linear temperature-sensitive detector, in particular to a repair call control method for a restorable linear temperature-sensitive detector that can avoid false fire alarms. Background technique [0002] The recoverable linear temperature detector is a widely used fire detector. It is mainly composed of a linear temperature sensing element and one end connected to the linear temperature sensing element. It can monitor the temperature of the linear temperature sensing element or the alarm electrical parameters in real time. (or sampled value) to detect, and according to the size of the temperature or alarm electrical parameters (or sampled value) to send out the conversion box of the alarm signal. figure 1 It is a structural schematic diagram of a recoverable linear temperature detector in the prior art. figure 2 for figure 1 Schematic diagram of the equivalent circuit of the rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/00G01K15/00
Inventor 张卫社李刚进
Owner SURELAND IND FIRE SAFETY
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