Method for contactless determination of biomass and morphological parameter of plant populations, involves treating plants of populations with ultrasound by releasing acoustic pulses from ultrasound source

摘要

#CMT# #/CMT# The method involves treating plants of the populations with ultrasound by releasing acoustic pulses from an ultrasound source with a sound frequency of 30 to 300 kilohertz and pulse duration of maximum 500 microseconds in a cyclic manner. The air temperature is measured in a concurrent manner in order to determine the temperature-dependent sound speed. A timer is started with a certain period of time simultaneously with the releasing of the acoustic pulses. #CMT#USE : #/CMT# Method for contactless determination of biomass and morphological parameter of plant populations. #CMT#ADVANTAGE : #/CMT# The method involves treating plants of the populations with ultrasound by releasing acoustic pulses from an ultrasound source with a sound frequency of 30 to 300 kilohertz and pulse duration of maximum 500 microseconds in a cyclic manner, and thus ensures increased measuring accuracy with reduced costs. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of an agricultural vehicle with a sensor arrangement fastened at the roof. 1 : Towing vehicle 2 : Roof 3 : Flange 5 : Ultrasonic sensors 7 : Plant population #CMT#INDUSTRIAL STANDARDS : #/CMT# The external data is logged on a position-specific map and is provided with a Global positioning system (GPS)receiver connected with the signal and evaluation unit.