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Method for judging contacting conduction between detecting conductor in linetype temperature-sensitive detector and conductive layer

A technology of temperature-sensing detectors and conductive layers, applied in thermometers using electrical/magnetic components directly sensitive to heat, using electrical devices, using electromagnetic means, etc. The effect of eliminating influence and improving reliability

Active Publication Date: 2010-08-11
SURELAND IND FIRE SAFETY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the detection conductor 1 inside the linear temperature sensing element is in contact with the conductive layer 4 due to one of the above reasons, if it is not repaired in time before it is put into work, the performance of the detector may be affected accordingly, but A method for judging the contact conduction between the detection conductor and the conductive layer in the linear temperature detector has not been found so far

Method used

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  • Method for judging contacting conduction between detecting conductor in linetype temperature-sensitive detector and conductive layer
  • Method for judging contacting conduction between detecting conductor in linetype temperature-sensitive detector and conductive layer
  • Method for judging contacting conduction between detecting conductor in linetype temperature-sensitive detector and conductive layer

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Embodiment 1

[0028] The method for judging the contact conduction between the detection conductor and the conductive layer in the linear temperature-sensitive detector provided by the present invention is applicable to the non-recoverable linear temperature-sensitive detector shown in FIG. 1 . The linear temperature sensing detector is mainly composed of a linear temperature sensing element, a conversion box 7 and a terminal resistor 6 respectively connected to both ends of the linear temperature sensing element; wherein the linear temperature sensing element includes two detection conductors 1, 2 and A semiconductor material layer 3, a conductive layer 4 and a fusible insulating layer 5 arranged between two detection conductors 1, 2, wherein the two detection conductors 1, 2 can be arranged in parallel, winding or coaxial manner , and at least one is elastic steel wire. In addition, one of the two detection conductors 1 and 2 can be made of thermocouple wire, so as to form a linear temper...

Embodiment 2

[0036] The method provided in this embodiment for judging the contact conduction between the detection conductor and the conductive layer in the linear temperature detector includes the following steps in order:

[0037] 1) When there is no fire, when it is confirmed that the detection conductor 1 and the conductive layer 4 are not in contact with the linear temperature detector, the conversion box 7 first measures a sampling value (resistance value) between the two detection conductors 1 and 2. or voltage value), and take this value as the stage of the initial value;

[0038] 2) The conversion box 7 performs real-time detection of the sampling value (resistance value or voltage value) between the two detection conductors 1 and 2 in the linear temperature-sensitive detector;

[0039] 3) When a fire occurs, the temperature of the linear temperature sensing element will rise due to heating, and when the heating temperature exceeds the alarm temperature, the conversion box 7 imme...

Embodiment 3

[0042] When the semiconductor material layer 3 in the above-mentioned linear temperature-sensitive detector adopts NTC or CTR characteristic heat-sensitive materials, if the detector operates in a low-temperature environment, the resistance of these heat-sensitive materials will be very large, resulting in conduction and There is not much difference between the sampled values ​​in the non-conducting state, and the method provided in this embodiment needs to be used for judgment at this time. The method provided in this embodiment for judging the contact conduction between the detection conductor and the conductive layer in the linear temperature detector includes the following steps in order:

[0043] 1) In the case of confirming that the detection conductor 1 is not in contact with the conductive layer 4 in the linear temperature detector, the conversion box 7 first measures a sampling value (resistance value or voltage value) between the two detection conductors 1 and 2, And...

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Abstract

A kind of method which judges detecting conductivity between conductor and conducting layer in linetype sensor is disclosed, which includes under condition that detecting conductor and conducting layer are not conducted; the transforming box firstly detects sampling value as original value; then the transforming box detects sampling value in real time; the transforming box calculates absolute value of differences between sampling value and original value, when the difference value is bigger than set value and sends alarm signal. The method of the invention uses transforming box to detect sampling value in real time, and compares absolute value of difference value between sampling value and original value and setting value to judge whether the detecting conductor and conducting layer are conducted. Once they are conducted, the transforming box sends alarm signal to prompt personnel maintain in time, so effect to detector for conductivity between detecting conductor and conducting layercan be eliminated, so reliability of linetype sensor can be increased.

Description

technical field [0001] The invention relates to a method for judging the contact conduction between a detection conductor and a conductive layer in a linear temperature-sensitive detector. Background technique [0002] The non-recoverable linear temperature detector commonly used at present is a fire detector with a wide range of uses. The electrical alarm parameter (or sampling value) is detected, and the conversion box that sends out the fire alarm signal according to the temperature or the electrical alarm parameter (or sampling value) is composed of a terminal resistor connected to the other end of the linear temperature sensing element. FIG. 1 is a structural schematic diagram of a non-recoverable linear heat detector in the prior art. As shown in Figure 1, this prior art non-recoverable linear temperature detector is mainly composed of a linear temperature sensing element, a conversion box 7 and a terminal resistor 6 respectively connected to both ends of the linear t...

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