SU1418624A1 - Remote-reading meter of mean direction of stream - Google Patents

Abstract

This invention relates to an oceanographic measurement technique. The purpose of the invention is to improve the measurement accuracy of the average direction of the flow due to the gain of the accuracy of the measurement of the tracker. The transducer 1) directs the flow into a signal and forms a pulse sequence in which the number of pulses is proportional to the direction of the flow. Direction signals are transmitted to the processing unit (elements 5-16), in which the register 8 accumulates the sum of the direction codes, and the register 9 concentrates the difference between the previous and next values. Code values are analyzed at nodes 10, 12, and 15 comparisons. According to the analysis results from the output of the sum register 11, the correction is either fed to the input of the adder 3, where the correction and the sum of the register code 8 are added, or from the averaged code of the sum of the adder 13, the amendment is subtracted in § 14, the input of which is connected to the adder 13. The measurement result is fed to the input of register 16 of the measured value. 1 il. (L

Description

The invention relates to a measurement technique, and 1-1 to a device for measuring the average direction of flow. The purpose of the invention is to improve the measurement accuracy.

The drawing shows a block diagram of the proposed device

The device contains a power amplifier 1 direction into an electrical signal, an electrical signal converter 2 into an impulse number, a converter of 3 rpls — a loop into a code, a block of 4 sync signals, an input node 5, a former, a memory register, 7 memory “summing up” direction register 8 subtractive register 9 directions e node 10 comparison Less summing register 11 periods node 12 comparisons More than 180 °% summer 13 codes ,, subtracting register lAj comparison node 15 More than 360 and register 16 of measured value.

The transducer 1 is interconnected with a flow orientation system mounted on a hermetic enclosure 17 "

Elements 5-16 form the block 18 of processing the codes of Block 18 through a communication line 19 connected to the output of the converter. 20 electrical signal generator into a code; Converter 2.0 contains elements 2-4 "

The device works the next time.,.

The electrical signal from the output of converter 1 is fed to the input of pulse converter 2, at the output of which the number of pulses is proportional to the direction of flow. This number of pulses in the converter 3 is converted into a binary code, transmitted together with the starting pulse through line 19 to the input node 5 of the code processing unit 18.

A starting pulse5, selected at the input node 5, starts the driver 6, providing at its outputs a sequence of time shifted pulses. With the first pulse from the first output of the former 6, the code is rewritten from the input node 5 to the register 7 of the memory. From the output, the parallel code is fed to the inputs of elements 8--10, B with 5.1 "rotating register 8 directions" accumulates the sum of direction codes for Selected number of measurements, Subtracting by a Tagistrom 9 Proc. Equivalent with Subtraction

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Previous icon 1 code from the next. If the difference is greater than 180 °, then the preceding changes occurred in I., II, or III9 IV quarter x, and after that, respectively, IV and I quarter x, respectively. When the difference is greater than 180 °, the comparison node 12 is triggered, the comparison node 10 is triggered at the same time and the registering register 8 is triggered. The operation of node 12: comparison indicates that the sum of directions j is in summing register 8; It is necessary to add an amendment equal to n 360 ° 5 GDR - ii the number of measurements in the I and II quarters x. Comparison node 10 compares the value of the code at the first input to 180 °. If this value is less than 180, then the change occurs in I and II quarters and the comparison node 10 sends a signal from its output to the first input, summing the register 11 periods, each time the arrival of this signal adds to its internal code value corresponding to 360 °. The resulting correction from the output of the sum register of 11 periods is given on the first input, the adder 13 codes only if the comparison node 12 triggered and the signal from its output came to the third input cz of the dimming register 11 periods, 1 Su 4mator 1 3 codes summarizes amendment and sutfzu obtained on the sum register of 8 directions. In addition, the cyiviMaTop 13 code averages the result obtained by dividing the obtained sums by the number of measurements,. If cpu, cn sum is greater than bw, then comparison node 15 is triggered, the signal from whose output is fed to the input of the deducting register of 14 periods, where the value of 360 ° is subtracted from the averaged amount received at its input from the output of the adder 13 codes register 14, the result is fed to the first input of register 16 of the measured value where it is stored by the signal received at its second input from the former 6 o By the same signal by the former 6, the drive code processing unit 18 returns to its initial state and then the operation cycle repeats . At the fourth output of the imaging unit 6, a signal appears only at the first measurement in the cycle. This signal prohibits the operation of the comparison unit 12 during the entire time of the first measurement, while no comparison of the values of the directions of the last measurement of the previous and the first measurement of the subsequent measurement cycles occurs. The proposed device, by comparison with the known, allows to increase the accuracy of determining the correction, since it is determined by multiplying the number of measurements in the I and II quarters by 360 °, m. is determined by multiplying the integers. The accuracy of the determination of the mean direction has increased, since a joint averaging of the total sum of the measured values of the direction and correction,

Claims (1)

 Invention Formula A remote average flow direction meter comprising a sealed case with a flow orientation system fixed thereto, a code processing unit, a direction converter into an electrical signal and an electrical signal converter into a code connected to the input node of the code processing unit, characterized in that : Fill in the measurement accuracy, the code processing unit is designed as comparison nodes More than 180 °, Less than 180 and More than 360 °, summing direction register, subtracting direction register, total period register, subtracting the register CTpas of the code adder, the register of the measured value, the information input of which is connected to the output of the subtracting register, the memory register. 8624 the input of which is connected to the input node, and the output is connected to the input of the summing register of directions, and is formed with five outputs of time-shifted pulses, the input of which is connected to the input node, the first output is connected to the control input of the memory register, the second output is to control input 10 subtractive direction register and to the control input of the comparison node Less than 180 °, the third output to the control input of the summing direction register, to a separate control input of the comparison node Less than 180 ° and to the control input of the comparison node More than the fourth output to the additional control input of the node Comparison More ISO and Fifth 20 output - to the individual entrances of the days of the world register of directions, summing the register of periods, the comparison node is greater than 180 and the register of the measured value, while the output of the node 25 comparisons Less than 180 is connected to a separate input of a summing register of periods, the output of a subtractive register of directions is connected to a separate input of a comparison node More 30 180 °, the output of the latter is connected to a separate input of a summing register of periods, the output of a summing register of periods and the output of a summing register of directions are connected to the input of the summers of codes, the output of the latter is connected to a separate input of the deducting register and to the input of the comparison node More than 30%; to a separate entrance 40 deducting register.