SU970229A1 - Device for mirror galvanometer oscillograph time mark period frming and identification - Google Patents

Description

also, using a galvanometer, recording second intervals in the form of lines of a certain length. Taking into account that the length of one interval in mm is numerically equal to the speed of pulling of the recording medium, it becomes possible to identify the time period following the time stamps {.

The main drawback of the device is the need to periodically measure the length of the second intervals, which is especially apparent at high speeds of the recording medium (1000, ..., 10,000 mm / s) when the length of only one interval is 1, respectively. ,, 10 m In the course of interpretation, the oscillograms must either be saved (even if it is not caused by a special need, sections of the oscillograms of the specified length or manually put the price of time marks on the oscillogram.

The purpose of the invention is to simplify the process of interpreting waveforms.

The goal is achieved by the fact that the device for forming and identifying the time period of the time-stamped light beam oscilloscope, containing an exemplary frequency pulse generator, whose output terminals are connected to a flash lamp and a galvanometer through a series-connected control panel board and a control unit. and up to two additional switch boards, the feedback circuit of the frequency divider connected to the output terminals of its arms through The contacts of one of the additional switch boards, and the output terminals of the pulse generator of the exemplary frequency, are connected to the input of a frequency divider, the output of which is connected to a galvanometer, through the contacts of the second additional board.

The drawing shows a diagram of the proposed device.

The device contains a switch 1 of the time period following the time stamps, a generator of 2 pulses of exemplary frequency (in the considered example, the generator generates pulses with a period O, 01, ..., 10 s), a unit 3 for controlling the operation of a pulsed lamp, a pulsed lamp 4, an input 5 variable frequency divider, variable frequency divider 6, variable divider feedback circuit 7, variable frequency divider, output clamps 8-1 of the frequency divider arms with variable ratio, output 14 variable frequency divider, oscillographic galvanometer 15.

The operation of the device is as follows.

Depending on the speed of movement of the recording medium, on which

registration of the processes under investigation is carried out, the operator using the switch 1 sets the optimal time period for the time stamps to follow. At the same time through the main. the charge (1/1) of the switch 1 is the generator 2 pulses of an exemplary frequency, the period of which has been set by the operator, is sent to the unit 3 for controlling the operation of the pulse lamp 4 of the timer. Consequently, the time stamps of the specified period will be plotted on the movable recording medium (in the drawing, time stamps with a period of 0.1 s are plotted from the available time stamp periods O, 01, ..., 10 s). At the same time, the oscillator 2 pulses of the same frequency are supplied with an additional board (1/2) of the switch 1 to the input 5 of the frequency divider 6 with a variable coefficient. The division ratio of the latter is set depending on the selected time period following the closure by closing the switch (1/3) of the switch 7 of the splitter feedback circuit 7 to one of the output terminals of its arms 8 - 13. In this case, from the output 14 of the frequency divider with a variable factor The galvanometer 15 receives pulses that are synchronized with a period of time stamps and which will be recorded by a galvanometer beam on the edge of the record carrier. The period of these pulses will be more than the time period following the time stamps, determined by the division factor of divider 6, which, in turn, is set at the time the time period is followed by time switch 1.

Thus, by determining the number of periods of the time stamps, concluded between two galvanometer pulses, it is possible to unambiguously determine the period of the time stamps.

Comparative tests of the proposed device with limestone have shown that the introduction of the invention allows, due to a minor complication — an increase (by two) in the number of switch boards and the introduction of a variable factor frequency divider — to simplify the interpretation of the oscillograms and to increase the productivity of the operator.

The use of modern devices of integrated technology greatly simplifies the task of implementing both a frequency divider with a variable coefficient and the device as a whole;

simple, reliable and small size.

Claims (1)

The formula of the invention A device for forming and identifying the period of time following the time stamp of a light-beam oscilloscope, containing an exemplary-purity pulse generator, the output terminals of which are connected via a series switch board and a control unit to a flash lamp, as well as a galvanometer, in order to simplify the process of interpreting the oscillograms, it is equipped (a variable factor frequency divider and two additional switch boards, with a variable factor frequency splitter feedback circuit connected to the output terminals of its arms through the contacts of one of the additional switch boards, and the output terminals of the reference frequency generator are connected with the input frequency divider with a variable coefficient, the output of which is connected to the galvanometer. Sources of information taken into account in the examination 1. Oscilloscope light beam H044. KT 25-04. .28-78.