SU1560996A1 - Meter of atmospheric pressure - Google Patents

Abstract

The invention relates to a measurement technique and can be used to accurately measure atmospheric pressure with the output of data in digital form. The aim of the invention is to improve the accuracy and speed of the device. The surface of the sensitive aneroid element 5 is mirrored, and its movement under the action of atmospheric pressure is measured using a laser displacement meter consisting of laser 1, collimator 2, lens 3, hologram 4, and photodetectors 6 and 7. Moreover, photo detector 6 detects an integer number of maxima The illumination, which is displayed on the indicator 16 through the circuits And 12 and 13, the reversible counter 14 and the decoder 15, and the photodetector 7 determines the sign of the deflection surface of the aneroid element. The signal of the photodetector 7 is used to switch the signal of the photodetector 6 to the forward or reverse counting of the reversible counter 14 by means of an amplifier 9, a delay circuit 8, a comparator 10 and an inverter 11. 1 sludge.

Description

FIG. 2

R

Editor L.Pcholinsk

Compiled by A. Zosimov Tehred L. Serdyukova

Order 974

Circulation 465

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk lud. D. 4/5

Proofreader S.Mekmar

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Claims (1)

Claim Atmospheric pressure meter containing an aneroid sensitive element and a recording device with an indicator, characterized in that, in order to increase the measurement accuracy, a laser, a collimator, a lens, a hologram, first and second photodetectors, a delay line, a differential amplifier, a comparator are introduced into the recording device , inverter, first and second circuits AND, a reversible counter and a decoder, while a laser, a collimator, a lens, a hologram and an aneroid sensor, a decoder with an indicator connected in series, you the course of the second photodetector is connected directly to the first input of the differential amplifier, and to the second through a delay line, while the output of the differential amplifier is connected directly through the comparator to the second input of the second circuit And through the inverter to the second input of the first circuit moreover, the aneroid sensitive element25 is installed at an angle d to the direction of the laser beam, which is selected within the ^1st <d <5 °, and the movable surface of the aneroid sensitive element is made with a 3Q tracing paper.