SU1716568A1 - Digital magnet recording device - Google Patents

Abstract

The invention relates to a magnetic recording technique, namely, devices recording experimental information. The purpose of the invention is to expand the functionality of the device by providing joint registration of signals from digital and analog sensors. Into a device containing an analog-to-digital converter, a switch, a register, a generator, two counters, a recording unit and a magnetic head, a digital measuring channel, a decoder, a block number and a communication counter are added in such a way that the device performs a serial poll of analog, digital and service channels and sequentially records the results on a magnetic tape. 1 il.

Description

The invention relates to a magnetic recording technique, namely, devices recording measurement information; for example in the course of an experiment on a magnetic carrier.

Known devices - recorders on magnetic tape, having a similar structure and containing signal sources (sensors, amplifiers), analog-to-digital converter (ADC), a recording unit, containing, as a rule, a recording register, a clock generator, a recording amplifier and a magnetic head, matching married with magnetic carrier.; v

It is also known a device that allows a digital code to mark each converted analog channel during recording.

The closest in technical essence to the present invention is a device for digital magnetic recording containing an ADC, outputs connected to the first inputs of the OR elements, a block of additional information, the outputs of which through the switch are connected to the second inputs of the OR circuits, shift register, recording circuit, magnetic head, a shift pulse generator; and a series of counters and switching elements constituting a system for reducing the power consumed by the device.

A disadvantage of the known devices is the impossibility of recording data from digital sensors, i.e. sensors whose output signal is represented by a code combination, the width of which is not previ

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shafts of ADC. The device can register digital data (various service information from a block of additional information), but only cyclically, and not together with analog data, i.e. It can mark the record with service data first — an experiment plan, a date, etc., after which the data stream from the ADC is recorded, and the side information block is turned off.

The purpose of the invention is to expand the operating capabilities of the recording device by providing a sequential-cyclic recording of analog, digital and service signals while simultaneously simplifying the design.

The drawing shows a block diagram of the proposed device,

The device contains ADC 1, the output of which is connected to the third group of inputs of the switch 2, the digital measuring channel 3, the output of which is connected to the second group of inputs of the switch 2, the output of the block

4 additional information is connected to the first group of inputs of the switch 2, the switch output is connected to the inputs of the parallel-serial register 5, the register output is connected to the input of the recording unit 6, the output of the recording unit is connected to the magnetic head 7, the output of the pulse generator 8 is connected to the input register shift

5 and the counter input 9 bits, the output of the bit 9. bits is connected to the input of register 5 and the counter input of 10 channels, the outputs of the channel counter are connected to the inputs of the decoder 11, the outputs of the decoder 11 are connected to the address inputs of the switch

2 (except for the latter), the first output of the decoder 11 is connected to the input of the additional information block 4, and the last output of the decoder 11 is connected to the start inputs of the ADC 1 and the blocking input of the recording block 6, the input from the ADC 1 is supplied from the analog meter 12..

The device works as follows.

Let all counters be in the zero state. Then the decoder is initialized at the first output. This connects to the register through the switch information outputs of the ADC. After a bit counter has been calculated by a single-word counter, a pulse appears at the output, writing a codeword to a register. At the same time, the channel counter is switched, the decoder connects the output of the digital channel to the register input through a switch. The generator pulses shift information from a register to a recording unit, which by means of a magnetic head registers it on a magnetic tape. The impulse from the first output of the decoder increases the value of the block number counter.

The digital channel and service information — the value of the additional information block — are identically recorded.

After all channels entering the information block are registered by a pulse from the bit counter, the channel counter goes to the extreme state. At the last output of the decoder, a strobe appears, which triggers the ADC to convert the input signal values and simultaneously blocks the recording block. The recording of information is stopped, a pause appears in the stream of switching on the tape, separating one information block from another.

After the next calculation of the bit counter, the device enters the initial state, but with the changed value of the block number counter.

The analog-to-digit write cycle is repeated again.

The device can also register a group of analog channels, while the conversion of the A / D converters is performed from each output of the decoder through the OR element.

Claims (1)

Invention Formula A digital magnetic recording device containing an analog-digital converter, a switch, a serially connected register, a recording unit and a magnetic head, a serially connected bit counter and a channel counter of a pulse generator, the output of which is connected to the register shift input, a block of additional information, the output of which is connected to the first group of inputs of the switch, about the fact that, in order to expand the operational capabilities of the device by ensuring sequential-loop recording, signal, digital and service signals while simplifying the device at the same time; A decoder is additionally entered in it, the last output of which is connected to the start input of the analog-digital converter and to the blocking input of the recording unit, the other outputs to the address inputs of the switch and the first input to the input block of additional information, and the input of the decoder - with the output of the channel counter, and the measuring digital channel connected by the outputs to the second group of inputs of the switch, the third group of inputs of which is connected to you odes analog-to-digital converter, the output the switch is connected to the input of the register of bit bits, the output of which is connected to the input of the pulse generator — to the input of the register write count.