SU1371583A1 - Digital indicator of grain losses - Google Patents

Abstract

The invention relates to a process control device for a combine harvester and is intended in particular to control the loss of free grain through straw and cleaning equipment. The purpose of the invention is to simplify the device and ensure the accuracy of the readings. Sifted grains fall on the sensor 3, the blows of which are converted: electric pulses. After cutting off the noise by filter 4 and converting to a normalized value, the pulses arrive at the subtractive input of the binary counter 5. The transfer pulse shaper 8 extracts the pulses, which are counted by counter 1, and the reference frequency pulses are fed to the read input. transfer pulses in binary counter 7 is set to a number that reflects the average frequency of the grain falling on the sensor. I il.

Description

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1371583

And: “) Brest refers to devices for controlling the technological process of a combine harvester and is intended for KOHTpOj m loss of free-of-charge 1 0 grain for straw and () the cleaning net.

The purpose of the invention is to simplify the device and increase the accuracy of the instructions.

The drawing shows a functional diagram of the digital index indicator of grain not.

The digital grain loss indicator consists of an indication unit I and two channels 2 measurements, each 1) 1Y of which contains sensor 3, connected via filter 4 to the subtractive input of binary counter 5, and reference frequency generator 6 connected to subtracting input of binary counter 7, totalized the input of which O is connected to the imaging unit 8, and the information input with the display unit I and the information input of the binary counter 5, the transfer output of which is connected to (the formation 1 l. 8. the second output connected to the installation enable input oichnoyu counter on.

Device) working with. By dx yushnm way.

Pa daik 3, rasno.yuzhshly at the end of co.ioMoi pca, fall sifted green), the blows of KOTopi, ix are converted into electrical im. 1ysy. Then (() iltrom 4 all kinds of interferences are cut off and n |) are collected in iiy.ibciji H ()) calculated by 1 value that goes to the binary input of the counter 5. If the number recorded in the binary counter 5 is zero, then with the arrival of the first .1s pa of the output of the swapping (p), signal 1 appears, but the leading edge of the koto) o | () (fiopMnpoiia, hen. 8, ет ell et.: 1s, KoTopbiii

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com. 7. On the trailing edge of the transfer pulse from the imaging unit 8, a pulse arrives at the input of the (V) binary counter 5, which writes the number counted by the binary counter 7 into this counter. The frequency of the subsequent transfer pulses is determined by the number unchanged from the binary counter 7, which in the binary counter 5 it is subtracted by the measured frequency) The subtractive input of the binary counter 7 receives the pulses of the reference frequency (I MI). The frequency of these pulses must be menpered frequency ().

When balancing the reference pulses with the frequency of transfer pulses in binary counter 7, a number is set that reflects the average frequency of falling grains on the sensor 3. This number in binary code is fed to the display unit.

Claims (1)

Invention Formula A digital index of grain notations, including an indication unit and two measurement channels, each of which contains a sensor connected to a filter, characterized in that, in order to simplify the device and improve the accuracy of the readings, it is equipped with two binary counters. and a reference frequency generator, connected to the subtracting input of a binary counter, the summing input of which is connected to the output of the former, and the information output is connected to the display unit and the information input of the second binary center tchika, the subtracting input of which is connected to the filter output, and an output - to an input of the second output of which is connected to the input resolution setting a second binary counter.