Sensor arrangement for detecting the proportion of broken grains in a stream of chopped material processed by a grain processor and field chopper equipped with it

摘要

A sensor arrangement for detecting the proportion of broken grains in a stream of chopped material processed by a grain processor (28) of a forage harvester (10) comprises a spectrometer arrangement (40) which acts on the chopped material flow with light and analyzes reflected and / or transmitted light in a wavelength-resolved manner in order to detect electronic signals with regard to electronic signals to provide recorded spectra of the chopped material flow, and an evaluation device (62) which can be operated to determine, based on the signals from the spectrometer arrangement (40), the content of the chopped material of a predetermined ingredient which is dependent on the amount of broken down grains in the chopped material flow. A control device (34) commands an actuator (50) to adjust the degree of processing of the grain processor (28) and evaluates the proportion of broken grains in the flow of chopped material based on the contents of the chopped material in the predetermined ingredient measured at different degrees of processing by the evaluation device (62).