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Multi-channel heat release electric detector

A detector and multi-channel technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of low detection rate, simple, weak signal output, etc.

Active Publication Date: 2009-04-15
HENAN HANWEI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing multi-channel infrared pyroelectric detector has relatively simple structure, low detection rate and weak signal output, which is not conducive to application

Method used

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  • Multi-channel heat release electric detector
  • Multi-channel heat release electric detector
  • Multi-channel heat release electric detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 , figure 2 with image 3 As shown, a dual-channel infrared pyroelectric detector includes a detector housing 2, an optical filter 1 embedded in the top surface of the housing, a pyroelectric film 4 arranged on the side wall of the housing, and a pyroelectric film for supporting the pyroelectric film. The film support 3, the detector base 7 forming a closed space with the shell, the circuit board 6 arranged on the base, the curved mirror 5 located on the circuit board, and the pins 8 embedded under the circuit.

[0021] In this embodiment, there are two optical filters 1, one is a reference optical filter, which only allows to pass through the optical filter of 3.9 μm infrared light (the optical filter can be selected according to specific needs). The infrared light basically does not absorb methane gas (take methane as an example here, other measured gases can be substituted) and water vapor, that is, it is not affected by gas, so it is used as a ref...

Embodiment 2

[0023] Such as Figure 4 , Figure 5 with Image 6 As shown, a four-channel infrared pyroelectric detector includes a detector housing 2, an optical filter 1 embedded in the top surface of the housing, a pyroelectric film 4 arranged on the side wall of the housing, and a pyroelectric film for supporting the pyroelectric film. The film support 3, the detector base 7 forming a closed space with the shell, the circuit board 6 arranged on the base, the curved mirror 5 located on the circuit board, and the pins 8 embedded under the circuit.

[0024] In this embodiment, there are four optical filters 1, one is a reference optical filter, which only allows to pass through the optical filter of 4.0 μm infrared light (the optical filter can be selected according to specific needs), and here, the optical filter The infrared light in the wave band basically does not absorb methane, carbon monoxide, carbon dioxide gas (this embodiment takes methane, carbon monoxide, carbon dioxide gas a...

Embodiment 3

[0026] Such as image 3 , Figure 4 with Figure 5 As shown, a four-channel infrared pyroelectric detector includes a detector housing 2, an optical filter 1 embedded in the top surface of the housing, a pyroelectric film 4 arranged on the side wall of the housing, and a pyroelectric film for supporting the pyroelectric film. The film support 3, the detector base 7 forming a closed space with the shell, the circuit board 6 arranged on the base, the curved mirror 5 located on the circuit board, and the pins 8 embedded under the circuit.

[0027] In the present embodiment, described optical filter 1 has four, and one is a reference optical filter, only allows to pass through the optical filter of 3.9 μm infrared light (can select optical filter according to specific needs), here the The infrared light in the band basically does not absorb the C-H bond, that is, it does not absorb alcohol, acetic acid volatile gas (alcohol, acetic acid volatile gas is used as an example here, w...

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Abstract

The invention relates to a multi-functional multi-channel pyroelectric infrared detector used for gas analysis and fire detection, comprising a detector shell, a filter inlaid on the top surface of the shell, a pyroelectric film arranged on the side wall of the shell, a support used for supporting the pyroelectric film, a detector base forming a closed space with the shell, a circuit board arranged on the base, a platinum wire connected with the pyroelectric film and the circuit board, a curved reflective mirror positioned on the circuit board and a pin inlaid under the circuit board. The multi-channel pyroelectric infrared detector has the advantages of scientific structural design, wide application range, standard packaging, stable performance, high detectivity and high integration degree.

Description

technical field [0001] The invention relates to a multi-channel infrared pyroelectric detector for gas and fire detection, in particular to a multi-channel infrared pyroelectric detector with scientific structure design, wide application, standard packaging, stable performance, high detection rate and high integration degree. Discharge detector. Background technique [0002] At present, most of the domestically known infrared pyroelectric detectors are single-channel infrared pyroelectric detectors, which are mainly used in the fields of human body and anti-theft. Most of the known multi-channel infrared pyroelectric detectors in foreign countries are traditional linear structures, which do not have the function of mirror convergence and signal amplification, and have certain limitations in application field and accuracy. [0003] The single-channel infrared pyroelectric detector does not have reference and compensation signals, and its accuracy has certain limitations. Th...

Claims

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Application Information

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IPC IPC(8): G01N21/59G01J5/00
Inventor 张永怀张小水任红军
Owner HENAN HANWEI ELECTRONICS
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