Advanced plant biochemical parameter non-contact monitoring device

A parameter monitoring and biochemical technology, applied in color/spectral characteristic measurement, electrical program control, program control in sequence/logic controller, etc. It can reduce the complexity of device design, save resources, and enhance useful signals.

Inactive Publication Date: 2010-01-13
BEIHANG UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, the increase of neutral reference samples complicates the structure and operation of the measuring device, and automatic detection cannot be realized, requiring manual operation
[0006] None of the currently disclosed patents and articles are related to non-contact, automatic detection of spectrum-based biochemical para

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  • Advanced plant biochemical parameter non-contact monitoring device
  • Advanced plant biochemical parameter non-contact monitoring device
  • Advanced plant biochemical parameter non-contact monitoring device

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Embodiment Construction

[0044] The core idea of ​​the present invention is: through the design of an integrated probe and an automated control process, unattended, non-contact spectral measurement of higher plant biochemical parameters is realized, and the sampling probe is controlled between the standard board and the measured by a stepping motor. It can automatically switch between time and double light path spectrum measurement and improve measurement accuracy; the program-controlled light source drive current circuit solves the problem of detector saturation and difficulty in extracting weak signals.

[0045] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to embodiments and drawings.

[0046] The implementation of the real-time monitoring device for plant biochemical parameters of the present invention will now be described in detail with reference to the accompanying d...

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Abstract

The invention discloses an advanced plant biochemical parameter non-contact monitoring device which is used for carrying out non-destructive automatic real-time detection on biochemical parameters of chlorophyll, water, nitrogen, and the like in plant canopy level in an unattended environment. A plant is detected by a visible/near-infrared spectral analysis technology, and the fine control can be realized; the unattended non-contact sampling is realized and the power consumption of the device is reduced by the integral design of a special light source and a sampling probe; a sampling device is separated from a host machine and the remote measurement is realized by an optic fiber technology. The invention realizes that the light source emits light with different illumination intensities when a reference signal and a blade signal are measured, always leads a detector to be capable of responding in high sensitivity, solves the problem of limited detection range of a photoelectric detector, improves the signal-to-noise radio of an instrument and ensures the measurement accuracy of the instrument by an adjustable constant current drive circuit.

Description

Technical field [0001] The invention belongs to the field of automatic monitoring of closed environments, and relates to a non-contact monitoring device for higher plant biochemical parameters. Background technique [0002] The non-destructive monitoring technology of plant biochemical parameters is mainly used for the detection and yield estimation of plant growth in precision agricultural management or scientific experimental cultivation technology. At present, there are two main methods for non-destructive monitoring of plant parameters and yield estimation. One is indirect monitoring, which reflects the growth of plants by detecting certain nutrient elements and water content in the plant growth environment (soil or liquid culture fluid) Status; the other is direct monitoring, which uses various devices and instruments to detect the content of biochemical parameters such as chlorophyll, nitrogen, and moisture in the plant itself to reflect the growth of the plant and estimate...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/27G05B19/04
Inventor 张广军张倩暄李庆波
Owner BEIHANG UNIV
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