MULTICHANNEL DEVICE FOR BULK SOLIDS MOISTURE MEASUREMENT Russian patent published in 2018 - IPC G01N25/56 

FIELD: measuring devices.

SUBSTANCE: device refers to the measuring one, in particular to technical means for measuring the grain moisture during drying and storage. Claimed bulk solids moisture measuring device comprises a reference voltage source, a reference frequency generator, first and second keys, a summing counter, an exemplary capacitor, an inverter, a three-way I element, characterized in that, a moisture sensor is introduced as a capacitor with losses, a clock pulse generator, a timer, the first and second RS flip-flops, the reversing counter, register of memory, the first, second, third, fourth I elements contain two inputs, wherein the output of the reference voltage source is connected to the inputs of the timer and the first key, the control input of which is connected to the output of the first I element, and the output – with the information input of the timer, the input of the second key and through the sensor with the common bus, which is connected through the exemplary capacitor to the output of the second key, the control input of which is connected to the output of the second flip-flop and the third input of the fifth I element; the timer output is connected to the data input of the summing counter, the first inputs of the first, second, third I elements and through the inverter with the second input of the fifth I element; The first inputs of the fourth and fifth I elements are connected to the output of the reference frequency generator, and the outputs accordingly are with the subtracting and summing inputs of the reversing counter, output of which is connected to the information input of the memory register, while is appeared to be the output of the device; the second inputs of the third and fourth I elements are connected to the second output of the summing counter, the output of which is connected to the first input of the second I element, while its output through the calibrator is connected to the input of the moisture indicator. Output of the clock generator is connected to the reset inputs of the reverse counter, the memory register, to the input S of the second flip-flop and the first flip-flop, the reset input of which is connected to the reset input of the summing counter, the output of the third I element and the synchronization input of the memory register, the output is connected to the second input of the first I element, with the timer comprising a series of series resistors R₁, R₂, R₃, comparators of the upper and lower thresholds, direct output of the flip-flop is the timer output, the direct input of the comparator of the upper threshold connected to each other and the inverse input of the lower threshold comparator form an information input of the timer, which is the input of the resistor R₁, its output is connected to the inverse input of the comparator of the upper threshold and to the input of the resistor R₂, the output of which is connected to the inverse input of the comparator of the upper threshold and to the input of the resistor R₃, the output of which is connected to the common bus; The R input of the flip-flop is connected to the output of the upper threshold comparator, and the S input to the lower threshold comparator output.

EFFECT: technical result consists in increasing the accuracy of measurements, in simplifying the device and its operation, in simplifying the device and its operation, shortening the measurement time, expanding the functionality of the device.

1 cl, 3 dwg