SU124652A1 - Instrument for processing curves recorded by recording machines and having ordinates, tangentially depending on the value of the recorded value - Google Patents

Description

Instruments for processing diagrams recorded by self-recording mechanisms are drawn, containing a lever that rotates 1 Around the peptre, which coincides with the center of rotation of the arrow of the recording mechanism. These devices are complex in their design, are easy to use, are inefficient and do not provide for obtaining the results of the necessary accuracy in determining the average value of the registered value.

The proposed device does not have these disadvantages. The device with the necessary accuracy ensures the integration of the function recorded in the form of a curve plotted on a tape with a recording: PM mechanism with a falling handle and having ordinates that are proportional to the tangent of values of the registered function. The device has a tangent summing mechanism and a pulse counter. The tangent summing mechanism contains a sliding lever with a needle, a ruler and a summing storage disc. When the needle moves along the edge of the ruler: and by the magnitude of the ordinate, the disk is rotated by an angle corresponding to the arctangent of a quantity proportional to the ordinate. A sliding arm carries a contact on the electrical circuit of the meter, closing the current circuit when measuring each ordinate. The counter records the number of movements of the bypass needle (number of ordinates). To determine the average value of the registered value, the swing-out sliding lever of the device carries, at the end, a needle that moves along the order of the processed curve is connected to a ratchet summing disk that controls the simultaneous movement of the recording form. The lever carries the electrical contact of the counter of the number of summable ordinates.

No. 124652

closing the current circuit when measuring each ordinate of the processed curve.

FIG. 1 shows the external view of the device being tagged; in fig. 2-principle of operation of the device; in fig. 3 electrical circuit.

The principle of operation / instrument is as follows. The tape with the diagram to be processed is inserted into the device so that the needle 1 with the movement of the atribor system coincides with the starting point A of the AV diagram processing area. The machining process begins by sliding the needle along the ruler 2 until it coincides with the zero line of the diagram. During this movement, the needle will decrease the ordinate corresponding to the point L. At the same time, the counting disk 3, driven by the dog 4, will turn a certain angle ", equal to the angle of deflection of the arrow of the galvanometer when this point is applied.

At the moment the needle coincides with the zero line, the moving contact 5 is in contact with the fixed contact 6, as a result of which the electrical circuit of the device closes. This circumstance will cause two phenomena: first, a small amount of ratchet mechanism 7 is drawn by the ratchet mechanism 7, comparable to the tape displacement in the recorder when recording two Serial points, and second, the pulse counter 8 is activated (point counter) . After this, the needle / reverse movement along ruler 2 returns until it coincides with the new point on the diagram. The disc 3 of the counting mechanism is in place, held by the fixed dog 9. The described process is repeated until the intended part of the diagram has been completely processed.

By the end of processing, the counting technician will show the sum of the angles of deflection of the arrow of the recording mechanism corresponding to the ordinates of the diagram described by the needle /, and the pulse counter will show the corresponding number of deviations of the arrow of the mechanism. The average deflection angle of the galvanometer arrow can be found as a result of dividing the readings obtained.

 „

where, is the sum of y / y, is shown as countable. n - the number of about) acted points, shown by the counter pulse.

The average value of the measured value for the studied period of time will be

wed

where 7, is the average value of the measured value;

K-coefficient of proportionality.

The numerical value of K can be obtained by applying control points to the chart.

The practical use of the instrument has shown that after the operator has gained some experience, the time required for processing the chart is reduced by a factor of 5-6 with greater accuracy of the results.

Subject invention

A device for processing curves recorded by recording machines and having ordinates, tangentially dependent on the value of the registered value, containing a swinging arm carrying a bypass needle, characterized in that, in order to reduce the average value of the registered value,

the device lever is connected to a ratchet-mounted ordinate by a curved disk, by moving the form with the processed curve, and carries the contact of an electrical circuit: a counter of the number of summable ordinates.

9

Fig 2

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