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Single temperature double output linear temperature sensitive detector

A temperature-sensitive detector and dual-output technology, applied to instruments, thermometers, measuring devices, etc., can solve the problem of inability to distinguish short-circuit fault signals from alarm signals

Inactive Publication Date: 2007-10-10
张陈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that when the detector is short-circuited by accidents such as mechanical extrusion or rat bites, the detector outputs an alarm signal, and it is impossible to distinguish the short-circuit fault signal from the alarm signal.

Method used

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  • Single temperature double output linear temperature sensitive detector
  • Single temperature double output linear temperature sensitive detector
  • Single temperature double output linear temperature sensitive detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0016] Example 2 A single-temperature dual-output line-type temperature-sensitive detector, see Figure 4 and Figure 5: It is characterized in that the structure of the temperature-sensitive cable: an elastic metal conductor 1 is coated with an insulating material layer 2, and then coated with aluminum plastic Or copper-plastic composite tape or metal foil or conductive material layer 4, another elastic metal conductor 1 covers the semiconductor material layer 3; two wire cores with different material coating layers are twisted together with the third conventional conductor 6 or Winding, or conventional conductors 6 can also be irregularly placed in parallel with twisted pair cores, conventional conductors 6 can be one or more than one, and then extruded a layer of outer sheath layer 5 to make a temperature-sensitive cable.

[0017] The conventional conductor 6 has the same function as the conductive material layer 4, but it is convenient for on-site wiring installation.

[001...

Embodiment 3

[0019] Embodiment 3 A single-temperature dual-output line-type temperature-sensitive detector, see Fig. 6 and Fig. 7: the two ends of the temperature-sensitive cable are respectively connected with the microcomputer modulator 7 and the terminal resistors R1 and R2 to form a closed-circuit signal acquisition circuit, and its characteristics The structure of the temperature-sensing cable has two elastic metal conductors 1, one of which is covered with a semiconductor material layer 3, and then covered with aluminum-plastic or copper-plastic composite tape or metal foil or conductive material layer 4; the other is covered with insulating material Layer 2: two wire cores with different covering layers are twisted or wound together, and the twisted or wound pitch is preferably between 20 mm and 200 mm, and then the outer sheath layer 5 is extruded together.

[0020] Or one of the elastic metal conductors 1 covered with insulating material layer 2 may also be covered with aluminum-pl...

Embodiment 4

[0021] Embodiment 4 A single-temperature dual-output line-type temperature-sensitive detector, see Figure 8 and Figure 9: It is characterized in that the structure of the temperature-sensitive cable: an elastic metal conductor 1 is covered with an insulating material layer 2; another elastic metal conductor Conductor 1 is covered with semiconductor material layer 3, and then covered with aluminum-plastic or copper-plastic composite tape or metal foil or conductive material layer 4; two wire cores with different material coating layers are twisted together with a third conventional conductor 6 or Winding, or conventional conductors 6 can also be irregularly placed in parallel with twisted pair cores, conventional conductors 6 can be one or more than one, and then extruded a layer of outer sheath layer 5 to make a temperature-sensitive cable.

[0022] One of the elastic metal conductors 1 coated with insulating material layer 2 may also be coated with aluminum-plastic or copper-p...

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Abstract

A linear temperature sensing detector of one-temperature and double-output type is prepared for applying two pieces of elastic metal conductor as temperature sensing cable structure, cladding semiconductor material layer on one piece and cladding insulation layer then cladding aluminium-plastic layer on other piece, twisting two said pieces, using modulator to monitor resistance variation between two said pieces, outputting fixed-temperature alarm signal when the piece cladded with insulation layer is short-circuited with conduction layer then with semiconductor layer and outputting short-circuit fault signal when short-circuit is occurred between two said pieces.

Description

technical field [0001] The invention relates to a fire alarm device, which is a single-temperature double-output linear temperature-sensitive detector. technical background [0002] The linear temperature-sensitive fire detector in the prior art is a fire detector with a wide range of uses. The linear temperature-sensitive detectors currently used are: [0003] Switching value linear temperature detector, see Fig. 1, in this detector, there is an outer sheath 11, there are two elastic conductors 13 twisted together in this sheath, the plastic layer 12 of certain melting point is used outside the conductor Covering, when the temperature of the detector rises to the point where the plastic softens or melts, under the elastic force of the elastic conductor, the conductors contact each other, that is, a short circuit occurs, so as to achieve the purpose of fire alarm. The advantage of this kind of detector is: when the temperature of any point on the cable between the detectors...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/16
Inventor 张陈王文江
Owner 张陈