A rocker-type multi-point crop canopy infrared temperature detection system and detection method

Abstract

The invention relates to a rocker type multipoint crop canopy infrared temperature detection system and method. The detection system is characterized by comprising a locking mechanism, an electric hollow rotating device, a cylindrical vertical rod and a rotary infrared temperature measuring device; the locking mechanism is fixedly connected with the electric hollow rotating device, the electric hollow rotating device is arranged on the cylindrical vertical rod through the locking mechanism, and the position of the electric hollow rotating device on the cylindrical vertical rod is adjusted through the locking mechanism; the rotary infrared temperature measuring device is connected to the electric hollow rotating device, the horizontal rotating angle of the rotary infrared temperature measuring device is adjusted through the electric hollow rotating device, the rotary infrared temperature measuring device detects the temperature of crop canopies and transmits a detection result to the electric hollow rotating device for processing, and the electric hollow rotating device transmits the temperature average value, obtained after processing, of the crop canopies to an upper computer. The rocker type multipoint crop canopy infrared temperature detection system and method can be widely applied to the fields of field irrigation management, land ecological status monitoring and the like.

Description

technical field [0001] The invention relates to a crop canopy temperature detection system and detection method, in particular to a rocker-type multi-point crop canopy infrared temperature detection system used for crop water shortage diagnosis, farmland irrigation decision-making, and land surface ecological status monitoring. Detection method. Background technique [0002] According to the principle of energy balance, the difference between crop canopy temperature and air temperature can directly reflect the evapotranspiration status, and then calculate the crop water stress index CWSI. In 1977, Jackson used the difference between thermal infrared surface temperature and air temperature at noon to estimate the sensible heat flux throughout the day, and then revealed the close relationship between crop canopy temperature and actual evapotranspiration. The crop canopy temperature has become an important parameter in the field of farmland evapotranspiration and water consump...

AI Technical Summary

Problems solved by technology

In the above method, the manual measurement data is discontinuous and has subjective errors. The manual measurement method has high measurement costs, a small amount of measurement data, and requires manual identification of data quality in the later stage. This data measurement method brings inconvenience to scientific research and production applications.

The fixed-point online real-time measurement device solves the problem of continuous observation of crop canopy temperature data, but in order to resist the invasion of wind, sand and dust in the field, additional strict protection measures are required to protect the pan-tilt rotation device of the fixed-point online real-time measurement device

In addition, according to the growth stage of the crops, it is necessary to manually adjust the position, height and observation angle of the infrared temperature sensor, which not only reduces the intelligence of the fixed-point online real-time measurement device, but also increases the experimental error due to the difference in the observation angle.

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