HM-G20 Leaf Area Index Tester Introduction: The leaf area index analyzer is used for the study of plant canopies at various heights, using fisheye lenses and CCD image sensors to obtain plant canopy images. Through specialized analysis software, relevant indicators and parameters of plant canopies are obtained. The use of fisheye lens imaging to measure plant canopy data can be done only once, simplifying the complex work of traditional measurement methods that require multiple measurements at a fixed point in a day. Moreover, using image method to measure canopy can actively avoid gaps in the canopy that do not meet the calculated structural parameters, and can also avoid obstacles that do not meet the measurement calculation. Features: 1. The fisheye lens can automatically maintain a horizontal state: a small fisheye camera lens specially designed for measuring plant canopy structure is installed on a handheld universal balance joint, which can automatically keep the lens in a horizontal state without the need for a tripod; 2. The fisheye lens can be extended into the canopy: the lens is installed at one end of the rocker arm, and due to its small size and equipped with a measuring rod, it can be easily extended horizontally or vertically to different heights of the canopy, quickly conducting layered measurements, and measuring the vertical distribution of light transmittance and leaf area index within the population; 3. Image analysis software: Image analysis software can define image analysis areas arbitrarily (zenith angle can be divided into 10 areas, azimuth angle can be divided into 10 areas). 4. Can shield unreasonable canopy parts: When conducting regional analysis on different directions of the canopy, it is possible to arbitrarily shield terrain scenes and unreasonable canopy parts (such as missing plants, edge row problems, etc.). The selection of starting and ending angles for different zenith angles can avoid canopy pore conditions that do not meet the calculation criteria for the structural parameters of the canopy. By manually adjusting the threshold, parameters such as leaf area index can be measured more accurately; Technical parameters: Lens angle: 150 ° Resolution: 768 × 494pix Measurement range: The zenith angle can be divided into ten regions from 0 ° to 75 ° (150 ° fisheye lens), and the azimuth angle can also be divided into ten regions at 360 ° PAR induction range: induction spectrum 400nm~700nm Measurement range: 0-2000 μ Mol/㎡? S Analysis software: Plant Crown Analysis System Power supply: 8.4V rechargeable lithium battery pack Probe size: diameter 6cm, height 10cm Total weight: 500 grams (excluding laptops) Transmission interface: USB Working temperature: 0-55 ℃
Introduction: The leaf area index analyzer is used for the study of plant canopies at various heights, using fisheye lenses and CCD image sensors to obtain plant canopy images. Through specialized analysis software, relevant indicators and parameters of plant canopies are obtained. The use of fisheye lens imaging to measure plant canopy data can be done only once, simplifying the complex work of traditional measurement methods that require multiple measurements at a fixed point in a day. Moreover, using image method to measure canopy can actively avoid gaps in the canopy that do not meet the calculated structural parameters, and can also avoid obstacles that do not meet the measurement calculation.
