Miniature long wavelength near infrared internet of things node based on linear variable filter

Abstract

The invention discloses a miniature long wavelength near infrared internet of things node based on a linear variable filter; the miniature long wavelength near infrared internet of things node comprises the linear variable filter, a linear array InGaAs focal plane detector, a detector drive circuit, a spectroscopic data acquisition circuit, a wireless communication module and a lithium battery; the linear variable filter is coupled with a photosensitive chip of the linear array InGaAs focal plane detector so as to replace a raster as a light splitter, thus omitting incidence fibers; the spectroscopic data acquisition circuit and the wireless communication module can realize wireless acquisition of the 0.9-1.7um waveband spectroscopic data; compared with a short wavelength near infrared area of a CMOS near infrared sensor, the long wavelength near infrared waveband responding to the linear array InGaAs focal plane detector can provide higher scientific research application values. The optical system structure can be simplified; the wireless communication and lithium battery can prevent the inconveniences caused by data lines and power lines, thus miniaturizing the long wavelength near infrared internet of things node, and providing technical supports for the internet of things expansion in the long wavelength near infrared spectroscopic analysis field.

Description

technical field

[0001] The invention relates to the application technology of the Internet of Things and the acquisition of long-wave near-infrared spectrum information. By using a linear gradient filter instead of a grating as a light-splitting element to simplify the optical system and design a miniaturized electronic system, the spectrum in the 0.9-1.7 μm band can be realized in the nodes of the Internet of Things The wireless collection of data is the technical basis for the application of long-wave near-infrared spectroscopy in the field of Internet of Things. Background technique

[0002] The near-infrared spectrum is usually divided into two segments: the short-wave near-infrared spectral region of 0.7-1.1 μm and the long-wave near-infrared spectral region of 1.1-2.5 μm. The early infrared application of the Internet of Things is infrared communication using infrared photodiodes, which does not belong to the field of spectral analysis, such as the infrared spectral an...

Examples

Embodiment Construction

[0018] The implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the miniature LWNIR IoT node based on linear gradient filter includes linear gradient filter 1, linear InGaAs focal plane detector 2, detector driving circuit 3, spectral data acquisition circuit 4, wireless communication module 5 and lithium battery 6. Among them, the linear InGaAs focal plane detector 2 uses a 256-element linear InGaAs focal plane component, with a pixel size of 50 μm × 500 μm, a pixel center distance of 50 μm, and a spectral response range of 0.9-1.7 μm; The linear gradient filter 1 with μm wavelength specifications is coupled on the surface of the photosensitive chip of the detector as a spectroscopic element, and is packaged inside the vacuum tube shell of the in-line indium gallium arsenic focal plane detector 2. The resolution of the linear gradient filter 1 is about 12nm, which can Satis...

technical field

[0001] The invention relates to the application technology of the Internet of Things and the acquisition of long-wave near-infrared spectrum information. By using a linear gradient filter instead of a grating as a light-splitting element to simplify the optical system and design a miniaturized electronic system, the spectrum in the 0.9-1.7 μm band can be realized in the nodes of the Internet of Things The wireless collection of data is the technical basis for the application of long-wave near-infrared spectroscopy in the field of Internet of Things. Background technique

[0002] The near-infrared spectrum is usually divided into two segments: the short-wave near-infrared spectral region of 0.7-1.1 μm and the long-wave near-infrared spectral region of 1.1-2.5 μm. The early infrared application of the Internet of Things is infrared communication using infrared photodiodes, which does not belong to the field of spectral analysis, such as the infrared spectral an...

Examples

Embodiment Construction

[0018] The implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the miniature LWNIR IoT node based on linear gradient filter includes linear gradient filter 1, linear InGaAs focal plane detector 2, detector driving circuit 3, spectral data acquisition circuit 4, wireless communication module 5 and lithium battery 6. Among them, the linear InGaAs focal plane detector 2 uses a 256-element linear InGaAs focal plane component, with a pixel size of 50 μm × 500 μm, a pixel center distance of 50 μm, and a spectral response range of 0.9-1.7 μm; The linear gradient filter 1 with μm wavelength specifications is coupled on the surface of the photosensitive chip of the detector as a spectroscopic element, and is packaged inside the vacuum tube shell of the in-line indium gallium arsenic focal plane detector 2. The resolution of the linear gradient filter 1 is about 12nm, which can Satis...

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