SU556325A1 - Device for measuring continuous physical quantities - Google Patents

Description

On the falling edge of the signal from the pulse accumulator, trigger 2 is triggered, one output of which gives the resolution of the AND 5 circuit to the passage of pulses of the clock frequency / t to the second input of the electrochemical integrator 3 circuit and to the input of the counter of 4 pulses, and the second output prohibits one of the inputs The circuits AND 6 provide information on the measured physical quantity while the counter 4 will receive the frequency pulses / thermochemistry integrator 3 operates in the “task-read” mode. In this mode, an input signal, such as a current, is first integrated over a set time. The integral is read by passing an electrochemical iggregator circuit and a stable signal through the device, for example, a current of a fixed magnitude and a counter-current input current and reference voltage. When the charge of the electrochemical integrator circuit is equal, the charge charge at the output of the electrochemical integrator circuit appears a pulse that flips trigger 2. Trigger 2 prevents the arrival of frequency pulses fi at the input of counter 4, which fixes the number written in it and equal in magnitude to the measured continuous physical quantity. The second output of trigger 2 gives permission to the circuits AND 6 for outputting the measurement result from the bit outputs of the pulse counter. The frequency of the cycle / c pulses must be calculated by the magnitude of the limits of variation of the measured continuous physical quantity, and the frequency is the signal of the fixed value. When the next pulse of the cycle (c) arrives at the input of the pulse accumulator, the number recorded in the pulse counter is nullified, since the continuous physical quantity can vary during the cycle time, and therefore the number recorded in the counter also changes. With the supply of a stop signal to the input 11, the trigger 9 of the control circuit 10 issues a prohibition against the AND 13 and the passing of the pulses / c to the input of the pulse accumulator.

A device for measuring continuous physical quantities will increase measurement accuracy at the time of the request for a measured physical

and the time required to measure it. This will provide an opportunity to get a more accurate result of a continuous physical quantity, more quickly and reliably judge its value.

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A device for measuring non-discontinuous physical majesty, contains, its scheme of coupling, coupled with a pulse collector, trigger, an emulsion counter, the discharge outputs of which are connected to the first inputs of the circuits AND, characterized in that, in order to reduce the time required for measurement, and increase the accuracy of measurement at the time of the request for the measured value, an electrochemical integrator with discrete reading, a source of clock pulses, and an additional circuit, are introduced into it

the output of the electrochemical integrator is connected to the second trigger input, the first input is connected to the output of the pulse accumulator and the first trigger input, and the second input is connected to the output of the additional I circuit, whose two inputs

associated with the source of clock pulses n the first output of the trigger, respectively, the second output of which is connected to the second inputs of the circuits I. Sources of information taken into account during the examination:

1. Auth. St. No. 437967, G 01 D 5/244, 1974.

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