SU981984A1 - Initiative signal input device - Google Patents

Description

t54) DEVICE FOR INPUT OF INITIATIVE SIGNALS

The invention relates to computing technology and automated control systems and is intended to introduce initiative signals into a control computing system.

The closest to the invention is an input signal initiator input device containing sensors on the transmission side, communication lines (by the number of sensors), and on the receiving side an initiative signal input module (MVVIS) one module per B or 16 sensors and a processor associated with MVVIS through the input-output interface 1.

Its disadvantages are a large number of links from sensors to the control computer complex (UHC), a large number of MVVIS and low speed, determined, on the one hand, by the need to poll all MVVIS, the inputs of which receive signals from the first sensors, and on the other hand, the duration of the processing cycle associated, in particular, with coding, of the address of the sensor that worked and the exclusion from subsequent processing of those sensors that were served during previous cycles of operation.

The purpose of the invention is to simplify the device and increase its speed.

The purpose of this is that a device for inputting initiative signals containing sensors, an input module for initiating signals whose outputs are connected to process inputs of the processor 10, are additionally inserted into a memory block connected to the sensors input module of an initiative signal, a cyclic variable switch a frequency of 15 mutations and an encoder, with the cyclic 1mutator made in the form of a block of keys, the outputs of which are connected in parallel to the input of the pmfrarator and through the OR element to the counting input

The 20 flip-flops connected through the waiting multivibrators with Bxoflai.ffl of the AND element, set up on its outputs, whose output is connected to the control input of the key, are informational

The 25 input of which is connected to the output of the pulse generator, and the output through the pulse distributor to the installation of 4 inputs of the memory block and the control inputs of the key block connected by 30 of its information inputs to

corresponding outputs of the memory block.

A functional block diagram of a device for inputting initiative signals is shown in the drawing.

The device contains sensors 1 on the transmitting side, a memory block 2, the inputs of which are connected to the sensors, a cyclic contactless switch 3, consisting of a block of 4 keys, the first inputs of which are connected to the outputs of the memory block 2, a distributor of 5 it-shuli, the outputs of which are connected with the second inputs of memory block 2 and key 4, trigger b from waiting multivibrators 7 and 8, the inputs of which are connected to different outputs of trigger b from element 9 AND, whose inputs are connected to the outputs of waiting multivibrators 7 and 8, from the key 10, control input which is connected to the output of element 9 I, and the output to the input of the distributor 5, from the master pulse generator 11, the output of which is connected to the second input of the key 10, from ishfratora 12, the inputs of which are connected to the outputs of the 4 key block, and from element 13 1Ш, included between the outputs of the block of 4 keys and the counting input of the trigger 6.

At the receiving side, there is a module 14 for inputting initiative signals, the inputs of which are connected to the outputs of the encoder 12, and a processor 15 connected via the input-output interface to the output of the MWIS.

The memory block 2 serves to memorize triggered sensors, can be made in the form of triggers set to 1 sensor turn on and reset by the falling edge of pulses from the distributor 5. The key block 4 can be implemented on the AND elements, ONE element per each sensor . Key 10 can also be configured as an Hv element.

The cyclic contactless switch 3 is used to alternately connect the outputs of the memory block 2 to the / inputs of the binary parallel code encoder 12. The switching frequency is selected to reduce the detection time of the activated sensor: the outputs of memory block 2, which have no information, are polled with a high frequency, and when interrogating the output of memory block 2 with a signal 1 that corresponds to the activated sensor, the connection time increases to the duration Necessary for transmitting, filtering and sensing the code by the processor. Changing the polling rate is done by automatically turning on the switch prohibiting switching circuit. The encoder 12 serves to obtain a parallel binary code corresponding to the sequence number (address of the activated sensor.

The device works as follows.

The leading edge of the pulses from the sensors in use 1 are cocked by the corresponding triggers of memory block 2. The cyclic sequential memory flash processor is carried out by the keys of block 4 under the control of the distributor pulses 5. At each time instant, one of the keys of block 4 is opened by the distributor 5, and either a zero code is formed at the input of the encoder 12 when the current sensor being polled does not require polling, or the code with the unit in the discharge of the polled sensor in the case of the cocked trigger 2 memory. According to the input signal, efrarator 12 generates and sends to the communication line a parallel binary code of the number (address) of the activated sensor. The module 14 for inputting the initiative signals, having received the address code, sends the Ready signal to the processor 15 The processor 15 polls the MVRIS and receives the address code of the activated sensor. A feature of the device is that the idle sensors can be polled at the limit frequency for the applied element base and not limited by processor. In the case of the occurrence of a unit at the output of a block of 4 keys, each time through element 13 OR, the leading edge tilts trigger 6, starts one of multivibrators 7 or 8, and blocks the input of pulses from generator 11 to distributor 5 through element 9 AND and key 10. Thus, the processing cycle of the activated sensor is lengthened in accordance with the temporal characteristics of the processor. The back edge of the pulse from the distributor 5 is reset by the corresponding polled trigger of block 2, so there are no repeated requests for processing from already served sensors. The presence in the circuit of two pending multivibrators 7 and 8, trigger 6 and element 9 I is due to the need for time delay after the termination of the pulse of the waiting multivibrator to restore it to its original state. Therefore, in order to increase the speed of the system, when polling the following triggered trigger of the 2 Psm unit, by switching on trigger 6, the second pending multivibrator will tilt, and the first one will be restored to its original state, etc. Element 9 I is used to match the inputs of multivibrators with key 10 when both multivibrators are in a steady state on

the inputs of element 9 And there will be two units and the key 10 will be opened, if one of the multivibrators works, then at the output of element 9 And the switch closes the key 10.

Thus, the use of a memory block, an encoder 12 and a cyclic switch 3, made in the form of a block of 4 keys, an element 13 of an IL trigger 6, waiting for multivibrators 7 and 8, an element 9 AND, a key 10, a generator 11 and a distributor 5 allowed us to simplify the device initiative signals, reduce the number of links between the transmitting and receiving sides and reduce the number of required 1 "1X MWISS, which became possible due to the coding of information, and increase the speed of the device, transmitting to the processor only the signals from sensors requiring bots.

Claims (1)

Invention Formula A device for inputting initiative signals containing sensors, an input module for initiative signals, the outputs of which are connected to the inputs of the processor / i, i.e., in order to simplify the device and increase its speed, it additionally includes series-connected between sensors and a module for inputting memory initiative signals, a cyclic switch with a variable switching frequency and an encoder, while the cyclic switch is made as a block of clues) whose outputs are connected in parallel to the inputs of the encoder and through an element OR to the counting input of the trigger connected via the 11 multivibrators waiting at its outputs with the inputs of the AND element whose output is connected to the control input of the key, inform Scintillation input of which is connected to the output of the pulse generators F, and the output pulses via a distributor - to the adjusting inputs of the memory unit and the control inputs of the key block, its data inputs connected with respective outputs of block pgsh minute. Sources of information taken into account in the examination 1. Logic KC imoHOBKa systems | Based on the processor M-bOOO ASBT-M RTM, Severodonetsk, Research Institute of Control, Computing Machines, p. 90-102, 1972 (prototype).