SU402831A1 - DEVICE FOR ANALYSIS OF THE FORM OF SINGLE-ELECTRIC ELECTRICAL SIGNALS - Google Patents

Description

one

The proposed device relates to the field of measurement technology.

A device for analyzing the form of single electrical signals is known, containing n channels, each of which contains an input discriminator, a trigger, an output connected to one input of the AND circuit, another input of the AND circuit of each channel to the output common to all channels of the counting pulse generator, and counter.

The known device is quite difficult to implement and has a long measurement time.

The proposed device differs from the known one in that it contains in each channel serially connected sawtooth generator, an input connected to the discriminator's output and the first trigger input, and an output to the first input of the discriminator, and an additional discriminator whose output is connected to the second input a trigger, as well as a delay line common to all channels, the input of which is connected to the input of the device, and the output is connected to the second inputs of the input discriminators of all channels, and the block of pulses cos reset, which is connected to the input of the delay line input, and outputs a, the key to the entry ramp generator voltage and to the first input of each channel counter, another counter input in kazhdo.m channel connected to the output-scheme "and the same channel.

The purpose of the invention is to simplify the device and reduce the time of registration.

FIG. 1 shows a block diagram of the device; in fig. 2 - timing work for one channel.

The device contains delay line 1, a block of reset pulses 2. The output of delay line 1 is connected to all the channel inputs (the number of channels depends on the required registration accuracy).

Each of the n channels contains serially connected input discriminator 3,

the trigger threshold of which varies from channel to channel; sawtooth generator 4; discriminator 5, the trigger threshold of which is the same for all channels and equal to the highest possible threshold of discriminator 3; trigger 6; the circuit "And 7 and the counter 8. The output of block 4, except for block 5, is connected to the input of the discriminator 3, and the output of this discriminator is connected, except for block 4, to one of the inputs of the trigger 6. One

from the inputs of the circuit "And 7 is connected to the output of the generator of counting pulses 9, common to all channels.

The output of block 2 is connected to the inputs of a generator with a voltage of 4 n counter

8 each of the channels.

The device works as follows.

With the arrival of the recorded signal, the block of reset pulses 2 generates signals that bring all the blocks of the device to the initial state. Through the delay line 1 (the delay time is determined by the time for setting up all the blocks to the initial state), the recorded signal Uc (t) (Fig. 2) goes to the input discriminators of all channels. Since all channels are identical and differ only in the trigger thresholds of input discriminators, only one channel is considered in the following.

Simultaneously with the arrival of the recorded signal to the discriminator 3, the saw-tooth voltage Um (t) with the steepness Ki from the saw-tooth generator 4 also enters. Signals IJc (t) and Um (t) on the discriminator are added to form the total signal s (t) ( Fig. 2). When the signal is Uy. (t) at time 1 it reaches the actuation level of the discriminator 3, indicated in FIG. 2 through Ui, the discriminator is triggered while simultaneously changing the slope of the sawtooth voltage of block 4. This voltage continues to increase, having, after the discriminator 3 triggered, the slope Kz. Ki. After the sawtooth voltage reaches the discriminator 5 Uz at the moment tz, this discriminator is thrown and its signal is fed to one of the trigger inputs 6. Since the second input is received from the discriminator 3, then a pulse 2-ii-width is formed at the trigger output The signals of the trigger 6 and the generator of the counting pulses 8 form at the output of block 7 (“I” scheme) a burst of pulses with a width of 4-ti. If the pulse repetition rate is equal to f, then the number of pulses N in a packet of width tz-ti is equal to

N f. (T, -t,). (1)

From FIG. 2 can get that

T, -t, - (i, t.} (2)

one

U, (i,) K, (f, -i,) - U, + (3)

or, subject to (i)

, (2a) K, -f

-f /, + / 7. (Behind)

From expressions (2) - (Over) it follows that, knowing the coefficients and / (r and the levels of U and U and measuring the time, you can find the coordinates

one point on the recorded curve of a single process. Expressions (2) or (2a) give the time, and expressions (3) and (For) the amplitude coordinate. By changing the fi value from channel to channel, you can get the whole

the desired curve.

Thus, the proposed device in digital form registers the coordinates of single pulses arriving at it.

Item from Gain

A device for analyzing the form of single electrical signals containing n channels, each of which contains an input discriminator, a trigger, an output connected to one input of an AND circuit, another input of an AND circuit of each channel to an output common to all channels of the counting pulse generator, and a counter characterized in that, in order to simplify the device and shorten the registration time, it contains in each channel a series-connected saw-tooth generator, the input connected to the output of the input discriminator Ator and the first input of the flip-flop, and

an output connected to the first input of the input discriminator, and an additional discriminator, the output of which is connected to the second input of the trigger, as well as a delay line common to all channels, the input of which

connected to the input of the device, and the output is connected to the second inputs of the input discriminators of all channels, and a block of reset pulses, the input of which is connected to the input of the delay line, and the outputs are connected to the input of the sawtooth keyboard and the first input of the counter of each channel, another input of the counter each channel is connected to the output of the circuit “And the same channel.

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