Plant monitoring device and monitoring method

Abstract

The invention provides a plant monitoring method. The method comprises the steps that the vertical distance H2 between an unmanned aerial vehicle and the ground is detected by a millimeter-wave radaror a microwave radar on the unmanned aerial vehicle; an infrared ranging device arranged on the unmanned aerial vehicle detects the vertical distance H1 between the unmanned aerial vehicle and the tipof a plant; the growth height H of the plant is calculated according to the vertical distance H2 and the vertical distance H1; and an image sensor arranged on the unmanned aerial vehicle acquires thespectrum and / or reflectivity and / or color coordinate information of the plant. According to a plant monitoring device, the infrared ranging device is arranged below the unmanned aerial vehicle to detect the vertical distance between the plant and the unmanned aerial vehicle; the image sensor is arranged below the unmanned aerial vehicle to detect the spectrum information of the plant; the millimeter-wave radar or the microwave radar is arranged below the unmanned aerial vehicle to detect the vertical distance between the ground and the unmanned aerial vehicle; and the infrared ranging deviceis provided with an area array photoelectric sensor and an LED light source. According to the method and the device, multiple sensors are arranged, and the plant can be comprehensively monitored.

Description

technical field [0001] The present application relates to a plant monitoring device and a detection method. Background technique [0002] In the prior art, the UAV needs to measure its height in real time during the working process, and a distance sensor is usually used to collect the height data of the UAV. The distance sensors include devices such as ultrasound, binocular vision, and laser radar. [0003] Among them, in the method of using laser radar, the laser radar is fixed on the UAV. During the working process, the laser radar emitting module emits detection light, and the detection light is emitted to the ground or the surface of other objects to be reflected, forming The echo signal is received by the receiving module of the laser radar. The laser radar calculates the relationship between the UAV itself and the ground according to the time difference, phase difference or triangular position relationship between the detection light sent by the transmitting module an...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing technology, lidar mostly obtains single-point distance data, and the information obtained for the detected target is limited, and the obtained distance data of the detected target is rough.

In addition, the single-point laser radar used is mostly detected by the optical method of infrared light. When it is applied to the monitoring of plants or crops, it can only detect the vertical distance information between the crops and the laser radar, but cannot detect the laser light. The vertical distance between the radar and the ground surface, that is, the growth height of the crop itself cannot be detected

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