SU395403A1 - DEVICE FOR AUTOMATIC CODING - Google Patents

Description

one

The invention relates to automation and telemechanics and may find application in systems for the parallel transmission of multi-element signals.

Devices are known for automatically encoding and launching telemechanical systems in parallel transmission of multi-element signals containing objects. control, each output of which is connected to the input of the corresponding threshold element through an integrating circuit, and the output of each threshold element is connected to the corresponding input of the encoder through a differentiating circuit.

However, in known devices, there is a possibility of loss of information when servicing flows with increased intensity, which is a consequence of the accumulation of time delay of messages when the information capacity of the system increases.

The aim of the invention is to increase the accuracy and decrease the time delay of messages.

For this purpose, shapers, memory elements and time elements are entered into the device, with the output of each control object connected via the corresponding forwarder to the first input of the memory element, the first outputs of each memory element, beginning with the first element, are connected to the second

The second inputs of all subsequent memory elements are connected to the inputs of the corresponding time elements, the output of each time element is connected to the corresponding input of the encoder and the second inputs of all memory elements.

The drawing shows a block diagram of the device.

The device for automatic coding of information contains encoder 1, time elements 2 (n blocks), memory elements 3 (n blocks), shapers 4 (n blocks). The signals to the drivers come from n control objects 5.

The control objects 5 are elements of the device that convert any change in the monitored parameter, its output outside the allowable zone, a change in the state of switches, safety devices, an emergency condition, etc. into an electrical relay signal. Objects 5, which are non-electric-to-electrical converters.

The formers 4 are designed to form a pulse from the leading edge of the re-linear signal of the object.

Memory elements 3 are used to store information about emerging requirements for transmission from the drivers 4

Elements 3 operate in two tunable modes: short-term and long-term memory. Each memory element 3 consists of a symmetric trigger and an electronic key. The initial position of the memory element is a trigger with one steady state, the electronic key is closed (steady state of the short-term memory mode).

A single trigger input and an electronic key input respectively form the input and control input of each memory element 3.

The memory element 3 is fed with an impulse to its input in an unstable state of the transient memory mode.

The duration of the excited state of the trigger with one steady state is chosen equal to the time sufficient to establish the priority of the coding of the message with the smallest sequence number (weight) among the fixed memory elements.

The memory elements 3 by applying the potential to their control inputs are transferred to the non-volatile memory mode, i.e. the electronic key opens and converts a trigger with one steady state into a trigger with two steady states by eliminating shoulder asymmetry.

At the same time, the information recorded in the memory element 3 is not erased, the general state of the trigger corresponding to the initial one is saved.

Each of the elements of time 2 is a one-shot and is designed to form a coding pulse to rebuild all the elements of memory 3 at this time IB long-term memory mode.

The encoder / is a direct encoder.

Each message corresponds to its own individual circuit consisting of control object 5, generator 4, memory element 5, and element of time 2.

In the absence of message signals, the device is in the initial state, i.e., the memory elements 3 and the time elements 2 of all the message chains are not energized, and the memory elements 3 are in the short-term memory mode.

When one, two or more messages arrive at the same time or in any sequence, the corresponding relay electric signals from the outputs of the control objects 5 after forming them into pulses on the leading edge by the formers 4 are fixed by the corresponding memory elements 3, which will go into an unstable state of the short-term memory. ti.

The presence of a functional connection between the memory elements of the 5 message chains will result in all subsequent memory elements 3 after memory element 3 of the chain corresponding to the tth message with the lowest number (weight) among those received, under the influence of output potentials on their control. The inputs are put into long-term memory mode.

Excited memory element 3 of the circuit it-.ro

messages that are in the short-term memory, returning to the initial state of the short-term memory mode, affect the trailing edge of the pulse on the input of the time element 2 of its circuit.

The time element is 2 cetzi of the / th message, triggered for a certain time, equal to the duration of the transmission of the code word, and a pulse is applied to the corresponding i-th message of the encoder input / encodes the i-th message.

At the same time, the memory elements 3 of all message chains at this time are transferred to the long-term memory mode by the action of a one-vibrator t-ro message on their

control inputs, with information about the messages recorded by the memory elements of the message chains, with sequence numbers (weights) are no more than i, and the memory elements of the chains in which there was no

the arrival of messages, the original state does not change.

Messages that occur during the coding of the i-ro message are fixed by the memory elements of 3 corresponding circuits for subsequent encoding.

After a certain time has elapsed, the time element 2 of the i-th circuit returns to its original state, removing the influence from the control inputs of the memory elements of the subsequent circuits, inclusively, along the circuit, the memory element of which recorded a message signal, the number (weight) of which, after coding was completed The message becomes the smallest among the fixed memory elements.

This creates the possibility of entering the chain transfer followed by the lowest number among those recorded in the memory, and the process of forming the code of the next message is similar to that described.

An encoder with such a functional link between the elements and tunable memory allows to obtain the minimum necessary time delays.

messages and virtually eliminate loss of information.

Subject invention

A device for automatically encoding information containing control objects and an encoder, characterized in that, in order to increase the accuracy and decrease the time delay of messages, shapers, memory elements and time elements are entered into it, the output of each control object being connected via a corresponding driver to the first input of the memory element, the first outputs of each memory element, starting from the first element, are connected to the second inputs of all subsequent memory elements, and the second outputs of all memory elements They are connected to the inputs of the corresponding time elements, the output of the time element is connected to the corresponding input of the encoder and the second inputs of all the memory elements.