SU458814A1 - Centralized program management system - Google Patents

Description

one

The invention relates to the field of automation and computer technology and can be applied in the automated control of technological processes, for example, production (Oil.

A centralized software control system is known, for example, group metering installations (GZU), comprising a control unit, an object number register and a time register connected to the first and second recording keys, respectively, an object status register and a switch connected to the object selection key.

The purpose of the invention is to increase the reliability of the system.

This is achieved by introducing into the proposed system three matching schemes and successively connected respectively an object number counter to the first decoder and a time counter, a comparison circuit and a second decoder, the first recording key being connected through the serially connected object counter connected to the first the object number register, the first decoder, the object selection key and the comparison circuit are associated with the control unit, the second write key through the serially connected time counter and the second th coincidence circuit connected to the register time and the third coincidence circuit connected in series through the register state of objects and a second decoder coupled to the control unit which outputs are connected to sootvetstvuyushaya; three inputs them coincidence circuits and counter time and the object number. The drawing shows the scheme of the proposed system.

It contains the register 1 of the object number, the first key 2 of the record, the counter 3 of the object number, the first matching circuit 4, the decoder 5, the time register 6, the second key 7 of the recording, the counter 8 of time, the second matching circuit 9, the switch 10, the AND key of the object , time comparison circuit 12, register 13

the state of the objects, the second decoder 14, the third coincidence circuit 15 and the control unit 16.

The object number, time, and object status registers are intended to be stored.

correspondingly, the numbers of the objects to be measured, the duration of the measurement time of the objects and the state of all the GZUs.

The object number and time counters are used as an intermediate memory.

The system works in the following way.

After the arrival of signal 17, corresponding to its GZU number, the system allows starting the measurement. To do this, from the control unit 16 to the input of the second decoder receives the enabling signal, which generates commands

the corresponding code at the output of the register 13 of the objects.

Answer 18 on the execution of the command is sent to the control unit 16 and is remembered. Then the control unit 16 prepares the next command code (metering prohibition) for this HZU to the input of the matching circuit 15. Next, the control unit 16 polls the counters 3 and 8, the results are written to registers 1 and 6 respectively via the matching circuits 4 and 9, as well as iodine The next instruction prepared in the coincidence circuit 15 is written to the object state register 13. Upon completion of the recording, the control unit 16 resets the counter 8 and the register 13.

In order to prohibit the measurement, the system issues the corresponding command, which with the response of the first command records one in register 13. In the time comparison circuit 12, the set measurement time of the object coming through the object selection key 11 from the switch 10 is compared with the time passed since the beginning of the measurement of the object coming from the counter 8 time.

If the measurement time has expired (if the codes match), then the second decoder 14 issues the corresponding commands. The process of answering the command is as described above. For delivery to the measurement of the next object, the device sends the appropriate command, which, after receiving the response 18 by the control unit 16, records the odi n pulse in the counter 3 of the object number, since after recording

code in registers in register 1 is the code of the second object.

Subject invention

A centralized software control system, for example, group metering installations, comprising a control unit, an object number register and a time register,

records connected to the first and second keys, respectively, an object status register and a switch connected to an object selection key, characterized in that, in order to increase the reliability of the system, three matching schemes and the first and the decoder and the time counter, the comparison circuit and the second descrambler, the first write key being

The object number counter connected in series, connected via the first matching circuit to the object number register, the first decoder, the object selection key and the comparison circuit are connected to the control unit,

The second key 31 of the record is connected via a serially connected time counter and the second coincidence circuit is connected to the time register, and a third circuit. I match through the serially connected state register of objects and the second decoder is connected to the control unit whose outputs are connected to the corresponding inputs of three coincidence circuits and counters. time n object number.