SU1456971A1 - Apparatus for determining total values of process parameter - Google Patents

Abstract

The invention relates to computing and measuring technology and can be applied to control technological processes, to account for raw materials, energy carriers, conversion and finished products. The aim of the invention is to expand the field of application of the device. The device contains an input signal normalizer 1, a resistive divider signal 2, a sum counter 3 turns, a pointer 4 parameters, a scale switch 5, a potentiometric compensator 6 including a rheochord 7, a phase-sensitive amplifier 8, a control winding 9 of the first electric motor 10, a second control winding 11 electric motor 12, control switch 13, operating windings 14 and 15 of electric motor 10 and 12, digital-controlled pulse generator 16, pulse generator 17, digital control input 18, first and second drive gears 19 and 20 and the driven gear 21 of the differential gear. Achieving this goal is ensured by introducing into the device a pulse generator, a digital control of the pulse width generator and a scale switch. 1 3.p.f-ly, 2 ill. i (Л С

Description

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The invention relates to measurement and computing technology and can be applied in the national economy to control various technological processes, metering of raw materials of energy carriers, conversion and finished products.

The aim of the invention is to expand the field of application of the device.

FIG. 1 shows the block-kinamatic scheme of the device; in fig. 2 shows a pulse width imager.

The device (Fig. 1) contains an input signal normalizer 1, a sharp divider 2 of the signal, a sum counter 3 turns, a parameter pointer 4, a scale switch 5 a compensator compensator 6, a rheochord 7, a phase-sensitive amplifier 8, the winding 9 of the first motor 10, the winding 11 of the second motor 12, the control switch 13, the working windings 14 and 15 of the electric motor 10 and 12, the driver

16 durability shushulas generator

17 pulses, speedy digital control input 18, first and second drive gears 19 and 20, driven by 21 differential gears

and digitalis output 22 totalized counter 3 turns.

The shaper 16 pulse duration (Fig. 2) contains a controllable counter - a frequency divider 23, a single vibrator 24 and a relay element 25, connected according to the above scheme,

The device works as follows.

The input signal Uj., Which is the representative of the measured parameter, undergoes primary processing (amplification, normalization) in the normalizer 1 and through the divider 2 and the disconnecting connection of the scale switch 5 enters the potentiometric compensator 6 and further to the phase-sensitive amplifier 8. The existing motor is unbalanced by the first electric motor 10 because its winding 9 is not closed, while the winding 11 of the electric motor 12 is short-circuited by the nepei-t switch 13, so that the electric motor 12 is reliably decelerated. After working out the imbalance and equilibrating the potentiometric compensator 6 by moving

the engine 7 with electric motor 10 through the pinion gear 19 and driven gear 21 arrow pointer

Parameter 4 shows the value of the parameter being measured. Possible changes in the input signal are monitored by the electric motor 10, the reichord 7

and indicated by pointer 4.

At a random time, the driver 16 generates a pulse that is in advance of the selected duration, in which the switch 13 and the switch 15 of the scale change their state. The closure of the bottom in FIG. 1 the contact connection in the compensator 6 creates an imbalance, which is already being worked out by the electric motor 12 (as its winding 11 opens) through the driving gear 20, the driven gear 21 and the reohord 7. The angle of rotation required by the electric motor 12 to compensate for the motor 12 3 turns. After the impulse of the driver 16 is terminated in the compensator 6, an opposite sign imbalance occurs again, which is worked out as already described, i.e. the electric motor 10 through the pinion gear 19, the driven gear 21. and the reochord 7. The slide motor 7 returns to the state in which it was before the arrival of the pulse of the curver 16, if the input signal did not change during the pulse.

In this case, the duration of the pulse of the former 16 is chosen such that the transition of the compensator 6 from one state to another is completely complete. Depending on the size generated by the switch

The imbalance and speed of the compensation circuit, the pulse rate of the imaging unit 16, is usually within 1-5 seconds and is formed by a single vibrator 24 (Fig. 2).

The transfer ratio of the divider 2 (in the simplest case of a variable resistor). Is chosen such (in such a way that one turn of the electric motor 12 is the value of the parameter (10, 100, 1000 m,

dm, KGS and T.fi.,

The frequency of arrival of the pulses of the imaging unit 16, also obviously influencing the price of one revolution of the shaft of the electric motor 12, is chosen: in advance, based on the statistical characteristics of the measured parameter, the need for correction with other parameters and other considerations.

Formula of the invention

1. Device for determining the total values of the process parameter, containing the input signal normalizer, to the output of which a resistive signal divider is connected, a series-connected potentiometric compensator and a phase-sensitivity amplifier, a speed counter summation, a control switch, a differential gear and the first and second electric motors , the control windings of which are connected in series and connected between the output of the phase-sensitive amplifier and the zero potential bus and shunt rrvany respectively razmykayu1tsim and closing contacts of the switch control, the first motor shaft is kinematically connected to the first pinion gear of the differential gear and the shaft of the second motor - to the input of the summing revolution counter and a second vedu-. gear differential gear, driven by the gear which

Connected to the potentio metric compensator motor, characterized in that, in order to expand the scope of application, a scale switch, a pulse generator, and a shaper and pulse generator, whose trigger input is connected to the pulse generator output, are entered, control input is the mode setting input. operation of the device, and the output is connected to the control inputs of the control and zoom switches, the information inputs and the output of the scale switch are connected respectively to the normalization outputs input signal and resistive divider signal and information input potentiometric compensator.

2. Device POP.1, characterized in that in it the pulse shaper is completed in the form of a sequentially included controllable counter — a frequency divider, a single-vibrator and a relay element, and the countergap and control to the inputs of the controlled counter-frequency divider is corresponding to the trigger input of the driver

the duration of the impulse input.

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Claims (2)

Claim 1. A device for determining the total values of a technological parameter, containing a normalizer of the input signal, to the output of which a resistive signal divider is connected, a potentiometric compensator and a phase sensing amplifier connected in series with 15 rev counter, a control switch, a differential gearbox and the first and second electric motors the control windings of which are connected in series and connected between the output of the 20 phase-sensitive amplifier and the bus of zero potential and are shunted respectively by the closing and opening contacts of the control switch, the shaft of the first electric motor is kinematically connected to the first drive gear of the differential gearbox, and the shaft of the second motor is connected to the input of the summing rev counter and to the second drive gear of the differential gearbox, the driven gear of which is connected to a rechord engine of a potentiometric compensator, characterized in that, in order to expand the scope, a scale switch, a general a pulse of pulses and a pulse width shaper, the trigger input of which is connected to the output of the pulse generator, the control input is the input of the device operation modes, and the output is connected to the control inputs of the control and scale switches, the information inputs and the output of the scale switch are connected respectively to the outputs of the input signal normalizer and resistive signal divider and with information input potentiometer. compensator. 2. The device according to claim 1, characterized in that the pulse shaper in it is made in the form of a sequentially connected controlled counter - frequency divider, one-shot and relay element, and the counting and control inputs of the controlled counter-frequency divider are respectively the trigger input of the pulse duration shaper and its governing input.