SU798788A1 - Device for input of random signal train - Google Patents

Description

(54) A DEVICE FOR INPUT OF THE SEQUENCE OF RANDOM SIGNALS of signal sections at a random but discrete frequency of their following. The aim of the invention is to increase the speed of the device by automating the process of inputting a sequence of random signals when solving operational tasks using a computer. The goal is achieved by the fact that serially connected clock pulses, a counter and a decoder amplifier driver, whose output is connected to one of the decoder inputs, an OR element, a permission signal generator, are inserted into the device, and the driver inputs are connected to the corresponding decoder outputs, and the outputs to the corresponding inputs of the OR element, the AND element, the first input of which is connected to the output of the ADC, the second input to the output of the threshold element, and the third input to the output of the OR element, and the output cient and connected to one of the computer inputs. The analog-to-digital converter input is connected either to the output of the envelope selection unit or to the output of the amplifier, thereby achieving the possibility of inputting the envelope or the analog signal itself. FIG. 1 shows a block diagram of the proposed device; in fig. 2 signals generated in the input device. The device includes an amplifier 1, an envelope selection block 2, a threshold element 3, an ADC 4, an external trigger generator 5, a data register 6, a shaper amplifier 7, a decoder 8, a clock pulse generator 9, a counter 10, drivers 11, an element OR 12, element 13, computer 14, switch 15. To determine the frequency of the following and form a permission signal to input a given area in the input process from the analog signal source, sync pulses are received that coincide in time with the initial moments of the analog signal. In the absence of an internal clock source, an external oscillator is used with synchronization at the initial moment of the analog signal. The device is divided into information and synchronization kangsha. The first is pre-processing the signal and converting it into a digital form, the second is determining the frequency of following the clock pulses and generating a resolution enable signal for the duration in accordance with the definition of the frequency beat. The information channel includes a serially connected amplifier 1, which provides for matching the signal source level and the ADC, envelope selection block 2, threshold element 3, ADC 4, external trigger generator 5, and data register b. The synchronization channel contains the amplifier-shaper 7, the decoder 8, the generator 9 clock pulses, the counter 10, the shapers 11, the element OR 12, the element And 13. The device operates in the following way. The data entry process begins with the reception of the first two clock pulses arriving at the input of amplifier 7. fixing the decrypted state of the counter 10 by one of the triggers included in the decoder 8, and resetting the counter 10 to the initial state. The trailing edge is allowed to re-fill the counter 10. The trigger output is connected to the corresponding driver 11, in which a resolution signal with a duration t is produced and whose location t in the interval bounded by the measured period is set by the operator before the input process. The enable signal determines the maximum amount of input array for a single section of the signal. In the circuit element And 13 checks the readiness of the computer 14 to receive data. The request signal is generated as a result of an operation on signals from the OR circuit 12 (one of the resolution signals) from the A / D converter 4 (accompanying signal) and from the threshold element 3. The request signal period is determined by the sampling frequency and speed of operations in the computer. In the case of readiness of the computer 14 to receive data, from it in the register 6 receives the read pulse. The operation of the information channel is as follows. The initial signal x (t) is fed to the input of amplifier 1. Depending on the operational processing problem, the signal itself or its envelope is subjected to input. For this purpose, the input of the A / D converter 4 is connected to the output of amplifier 1 or to the output of a contour 2 by means of a switch. The threshold element 3 allows the signal to be isolated against the background noise. The threshold value is set by the operator. The use of the proposed device allows the automatic selection and input of predetermined signal sections into a computer, which is necessary for operational signal processing.

Compiled by V. Vertlib

Editor N.Konchitska Tehred A. Babinets

Order 10031/64 Circulation 756 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent., Uzhgorod, st. Design, 3

Proofreader M. Vigula

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Claims (2)

1. Author's certificate of the USSR 15 1 526882, cl. G About F 3/05, 1975. 2. Mironenko M.V., Titov M.R. The organization of the input of random signals in the computer. - Instruments and equipment of experiment, 1974, 4 (prototype).