SU1714627A1 - Function converter - Google Patents

Abstract

The invention relates to a measurement technique, in particular, to measuring the moisture content of bulk materials by an electrical method, and can be used to expand the limits of moisture measurement and linearize the scale by converting a non-monotonic functional relationship between the output parameter and the measured parameter with an arbitrary location of the extremum in monotonic functions. The purpose of the invention is to expand the field of application by transforming non-monotonic functional dependencies with an arbitrary location of the extremum into monotonic functions. For this purpose, a clock pulse generator 4, memory blocks 5, and video adder 7 with corresponding connections are additionally introduced into the device. 2 Fig. S ^

Description

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The invention relates to a measurement technique, in particular, to measuring the moisture content of bulk materials by an electrical method and can be used to expand the limits of moisture measurement and linearize the scale by converting a non-monotonic functional relationship between the output and the measured parameter (input information) with an arbitrary extremum location in monotonic functions .

Known functional converters, containing comparators and output switch, formed by a set of keys and adder.

These functional transducers convert single-valued (functional) curves, when the relationship between the output parameter and the measured value is unambiguous,

In moisture measurement for a large group of materials (minerals), the calibration characteristic at some point has an extremum after which the information parameter decreases, and the same value of the input parameter (information) corresponds to two values of the measured value (input information). Therefore, these functional converters are not suitable for converting such functions.

The purpose of the invention is to expand the field of application by converting non-monotonic functional dependencies with an arbitrary location of the extremum into monotonic functions.

In Fig. 1, a block diagram of the proposed converter is given, in Fig. 2, a calibration curve.

The converter consists of comparators 1 and 2 (Fig. 1), a control switch 3 with two control channels 8.9 and 10.11, a generator of 4 clock pulses, blocks 5 and 6 of memory, and an adder 7.

The Converter operates as follows.

The information signals corresponding to the points of the calibration curve are quantized by the clock generator 4 as material is filled into the sensor.

The information signal from the input of the functional converter is simultaneously fed to the first inputs of comparators 1 and 2, to the storage units 5 and 6 and to the second information input of the first controlled channel 8.9 of switch 3.

When the information signals correspond to the points of the curve left of the extreme value, to the memory block 5 from

the output of the comparator 1 enters the recording enable signal together with the clock pulses. From the output of memory block 5, the information signal is fed to the second

input of comparator 1 and to the input of adder 7. From the direct output of comparator 1, the enable signal goes to the first control channel of the switch 3. and the information signal goes to the output

0 function converters which are points of a monotonic function. When the information signals correspond to the points of the curve that are right from the extreme value, the extreme value of the information signal is recorded on the memory block 5. From the inverse output of comparator 1, the enabling signal is fed to memory block 6, from the output of which the current signal goes to summing device 7 and the second input of comparator 2.

Summing ycTpoiicTBO 7 takes away from the extreme information signal

5 Sackt current signal Stack, this difference is added to the extreme signal, and the information signal Sinf Squest + Stack is sent to the controlled channel of switch 3. When the enable signal from the direct output of the comparator 2 is fed to the control channel of the switch 3, the information signal Sinf, which is the point of the monotonic function,

Claims (1)

5 claims A functional converter containing two comparators connected by the first inputs to the information input of the functional converter, and 0 direct outputs to the first and second control inputs of the switch, the output of which is the output of the functional converter, characterized in that in order to expand the scope of application by converting non-monotonic functional dependencies with an arbitrary extremum location into monotonic functions, it is additionally entered clock generator, 0 two memory blocks and an adder connected by an output to the first information input of the switch, and inputs to the outputs of the first and second memory blocks connected by information inputs to the information input of the function converter and the second information input of the switch, and clock inputs impulses, with the output of the first memory block connected to the second input the first comparator connected by the direct output with the recording enable input of the first memory block, and the inverted output with the recording enable input of the second memory block whose output is connected to the second input of the second comparator. ssg F (/ r.2