SU1135017A1 - Device for analyzing signals - Google Patents

Abstract

A SIGNAL ANALYSIS DEVICE, containing a first selector, an execution unit and a serially connected matching unit, a pulse shaper and a second selector, characterized in that, in order to increase the reliability of the analysis while simplifying the device, RS-flip-flop and shaper darts connected to the input are introduced . the first selector, the outputs of which are connected to the corresponding inputs of the execution unit, the outputs of the second selector are connected to the corresponding inputs of the RS flip-flop.

Description

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The invention relates to telecommunications and can be used in automatic long-distance communication systems for receiving signals from busy telephone exchanges.

Known receiver of buzzer signals, containing the amplifier-limiter connected to the frequency selector, the first output of which through the first driver is connected to the inputs of the first and second one-oscillators, and through the second driver to the executive unit, and the second output of the frequency selector through the third driver is connected to the executive unit, and the first output of the first one-shot is connected to another input of the frequency selector, the output of the second driver and its blocking input are connected via the third one the vibrator, as well as the first and second blocks of coincidence, the outputs of which are connected respectively to the inputs of the execution unit, and in, the first and second blocks of coincidence are connected to the output of the second one-oscillator and output of the execution unit, the other inputs of the first and second blocks of coincidence are connected to the output of the first one-shot and with the release of the first shaper l 3 "

However, the known receiver has insufficient noise immunity and low reliability.

The closest in technical essence to the present invention is a signal analysis device comprising a first selector, an execution unit and a serially connected matching unit, a pulse shaper and a second selector 2.

However, this device is difficult and has the lowest reliability of the analysis.

The purpose of the invention is to determine the reliability of the analysis while simplifying the device.

The goal is achieved by the fact that a signal analyzer comprising a first selector, an executive unit and a serially connected matching unit, a pulse shaper and a second selector are connected in series with an RS flip-flop and a front shaper whose output is connected to the input of the first selector whose outputs are connected to appropriate in the odem

the main unit, the outputs of the second selector are connected to the corresponding inputs of the RS flip-flop.

FIG. Figure 1 shows the structural electrical circuit of the proposed device; in fig. 2 - stress diagrams for his work. I The signal analysis device contains a matching unit 1, a pulse shaper 2, a first selector 3, an RS flip-flop 4, a front shaper 5, a second selector 6, an executive block 7.

The device works in the following way.

The tone signal is sent to the matching unit 1, from it to the shaper 2 pulses, the output of which is short pulses (Fig. 2a)

20 follow with the frequency of the input signal and arrive at the input of the second selector 6. If the frequency of these pulses corresponds to the set (42525 Hz), then the pulses (Fig. 25) go to the first output of the second selector b and set the RS flip-flop 4 from the initial state the opposite, if the frequency of these pulses is more or less than the set one or is absent, then RS signal 4 is reset to the initial state by a signal from the second output of the second selector 6 (Fig. 2c). From the output of the RS flip-flop 4, a signal indicating the set frequency at the input of the device (Fig. 2d) arrives at the shaper of 5 fronts, from the output of which short pulses fixing the beginning and end of each

0 / pulse (Fig. 2S), are fed to the input of the first selector 3. If the period of these pulses corresponds to the set (400140 ms), then the pulses / Fig. 2e) arrive at the first exit

5 of the first selector 3, and the executive unit 7 counts these pulses and, when it reaches the number of pulses, of a certain size fixes the reception of the tone signal Zanto. If the period of pulses is more or less than the set one or is absent, then the signal from the second output of the first selector 3 (Fig. 2g) of the execution unit 7 is reset. The pulse period at the output of the imager 5 fronts between odd and even pulses corresponds to

Claims (1)

A SIGNAL ANALYSIS DEVICE, comprising a first selector, an executive unit and serially connected matching unit, a pulse shaper and a second selector, characterized in that, in order to increase the reliability of the analysis while simplifying the device, RS-trigger and front-shaper are connected in series, the output which is connected to the input. the first selector, the outputs of which are connected to the corresponding inputs of the executive unit, the outputs of the second selector are connected to the corresponding? . the other inputs of the RS flip-flop. to. £ > J 1 1135017 2