SU1462288A1 - Analog information input device - Google Patents

Abstract

The invention relates to computing and can be used in medicine for the detection and insertion into a computer for the further processing of electromyographic signals for the purpose of diagnosing neuromuscular diseases. The device contains an analog-to-digital converter 1, a pulse generator 2, a comparator 3, a block of delay on shift registers 4, a interface block 5, a single-oscillator 6, a binary counter 7, a digital-analog converter 8, a storage oscilloscope 9, an output Request 10 of the device, information outputs 11 device inputs 12 control device. The device makes it possible to record rather rarely occurring electrical pulses of large amplitude at the information input and enter its parameters into the computer along with information about its initial stage (event history). Parallel output of useful information to a storage oscilloscope is possible for visual control in order to eliminate false positives. 2 Il. (L Od to yu 00 00

Description

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The invention relates to computing and can be used for detecting and inputting information about large-amp electrical pulses to a computer; Loudness, in front of which are signals: with a small. amplitude, carrying information in the history of the event, and can be used in medicine for processing Q electromyographic signal JIOB (potentials of motor units), in order to diagnose neuromuscular diseases, assess the degree of phylogenesis of the pathological process and the effectiveness of the treatment - and.

 The aim of the invention is to expand the scope of application by ensuring the input of current information and the previous work cycles. Fig. 2; 1 shows the functional scheme of the proposed device with | tva; in fig. 2 - time diagrams that explain his work. . ) The device contains (Fig. 1) analog-to-digital converter 1, pulse generator 2, comparator 3, one delay on the shift registers 4, 4 mating blocks 5, one-vibration 6, c | 7, digital-to-analog converter 8. Additionally, the memory is marked oscilloscope 9, output 10 I Sanpoc devices, outputs 11 of the device information, inputs 12 controls - 35 Len devices.

The device works as follows.

The electrical signals under study are fed to the input of the analog-digital converter 1 and to the input of the comparator 3 (Fig. 2a). The analog-digital converter 1 operates continuously during the entire analysis period of the process under investigation and is launched by the amplifiers coming from the output of the generator 2. The change in output co-r; either the analog-to-digital converter 1, corresponding to the next sample, occurs with a delay relative to the triggering pulse, equal to the conversion time of the analog-digital converter 1. This allows the same pulse to the clock inputs of the shift registers 4 stored in them move information by one bit to the exit side, and in the first bits write information from the analog output40

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digitizer 1 corresponding to the previous reading. Thus, at the time of the next measurement of the analog signal at the input of the analog signal at the input of the analog-digital converter 1, the outputs of the shift registers 4 and the output of the digital-analog converter 8 (Fig. 2 cF) contain information delayed by time T (where T is the period following impulses from the generator 2 output; N - the number of bits of the shift register 4).

As a block 5 in the proposed device, an input block is used, and the input KP is the clock input of block 5. Inputs D1 ADC - D8 ADCP are information inputs of block 5 of shift registers 4, inputs U23, U, U83, HGZ, X23, X43 , X83, BB are the control inputs of block 5, the outputs of BBAH, BBA2, BBA4, BBAB, BBB1, BBB2, BBB3, BBB4, CW are the outputs of Block 5.

When a comparator 3 appears at the input of a large amplitude signal. the output state is changed (Fig. 2) and the one-shot 6 generates a starting pulse (Fig. 2d), which from output 10 The device request arrives at the interrupt input of the computer and starts the program for entering information into the computer. Interacting with unit 5 via device control inputs 12 and device information 11, the computer enters digital information from outputs 11, the volume (fig. 2e) of which (the number of input information words) is determined by the program for entering information into the computer.

The information from the outputs of the shift registers 4 is also fed to the inputs of the least significant bits of the digital-to-analog converter 8. in order to convert to analog form and output to the storage oscilloscope 9, which operates in the standby mode and is synchronized by an external pulse from the one-vibrator output 6. The converter 8 signal is the sum of the signal under study and a constant level entered at the computer, which is set at the inputs of the higher ones. significant bits of the digital-to-analog converter 8 with the help of a chip reader

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Claims (1)

Claim A device for inputting analog information containing an analog-to-digital converter, a delay unit on shift registers, a pairing unit, a digital-to-analog converter, the information input of an analog-to-digital converter is the information input of the device, the outputs of the analog-to-digital converter are connected to the information inputs of the shift registers, the outputs of which connected to the information inputs of the interface unit, the output of the digital-to-analog converter is the information output of the device, different I mean that, in order to expand the scope of application by providing input of information of the current and previous work cycles, a counter, a comparator, a pulse generator, a one-shot oscillator are introduced into it, the comparator input is connected to the information input of an analog-digital converter, the output of the pulse generator is connected to the input start analog-to-digital Converter and with the clock inputs of the shift registers and the pairing unit, the output of the comparator is connected to the input of a single-vibrator, the output of which is connected to the counting input of the counter and is Xia control output device, the counter outputs are connected to inputs of a digital to analog converter significant bits, LSBs inputs of which are connected to the respective outputs of shift registers, the outputs of pairing unit are data outputs device control block are control inputs conjugation WMOs -, -. Dames device. I ..... I Φυι. 2