RU2714025C1 - Discrete signals input-output control center - Google Patents

Abstract

FIELD: control systems.

SUBSTANCE: invention relates to control systems. Discrete signals input-output control point consists of a housing having power supply units, converters of RS-485 serial interfaces and Ethernet switches. In addition, interconnected programmable converters of RS-485 serial interfaces are installed. Main and standby Ethernet switches are connected over the main and backup Ethernet channels to the main and standby processing units. Processor units convert the obtained data according to a predetermined algorithm and transmit them through the main and standby Ethernet switches to top-level devices via Ethernet or RS-485 channels.

EFFECT: improving control efficiency.

10 cl, 2 dwg

Description

Technical field

This technical solution relates to devices used as part of control systems, for example, security control systems or automated process control systems (hereinafter - ACS TP), namely, devices for information exchange between technical means (devices) of the lower level and devices of the upper control system level.

State of the art

The following solutions are known in the art.

A device for the exchange of information between automated mining equipment and automated process control equipment is known. The device is structurally made in the form of a separate unit placed in the housing. The processor block and the universal asynchronous transceiver block are located inside the case, the first input-output of which is through the RS-485 interface transceiver block, the intrinsic safety barrier and cable entry are connected to the industrial control system equipment. The second input-output block of the transceivers is connected to the first input-output of the processor block, the second input-output of which is connected via the TCP / IP stack to the first input-output of the block of transceivers of the Ethernet interface. The second input / output of the Ethernet transceiver unit is connected to the input / output of the 16-port Ethernet switch. Inputs-outputs from the third to the eighth block of Ethernet transceivers through the block of connectors for optical cables and cable entries from the second to the seventh, respectively, are connected to the equipment of the industrial control system. The ninth input-output of the Ethernet transceiver block through the twisted pair cable connector and cable entry, as well as the tenth input and output of the Ethernet transceiver block through the twisted pair cable connector and one of the cable entries are connected to equipment located on the surface mine. (RU 94097, publication date 05/10/2010).

A disadvantage of the known device is that it has insufficient reliability and low efficiency of controlling the parameters of lower-level devices, since it does not contain a duplicated computing part, has a small number of RS-485 ports, and also does not contain protection against short circuit, line overload, or current leakage.

A known transformer monitoring and control system comprising a central processing unit to which a power supply is connected, an RS-485 or Ethernet communication module, an optical fiber network switch transmitting information to the central processor, and input and output signal devices. Such a system is configured to collect information from a transformer, implement remote control and automatic monitoring. (CN 106054704, publication date 10.26.2016).

The disadvantages of such a system are that it has insufficient reliability and low efficiency of controlling the parameters of lower-level devices, since it does not contain duplicate computing part and redundant power, it has a small number of RS-485 ports, it does not have an Ethernet 10/100 Base-TX interface, and also does not have the ability to simultaneously connect devices via RS-485 channels and optical Ethernet channels.

Closest to the claimed solution is the input-output controller for processing and transmitting data from sensors and actuators to the upper block level system (hereinafter referred to as the SSB) via an Ethernet local area network, containing a housing that houses a processor with a single-board computer and connected to it a modular unit configured to process and convert signals received from sensors and actuators via the RS-485 channel and generate control signals via the Ethernet channel, as well as containing bl ok food. The device is configured to duplicate the transmitted data. (RU 2279117, publication date 06/27/2006).

The disadvantages of the closest analogue is that it has insufficient reliability and low efficiency of controlling the parameters of lower-level devices, since it does not have a redundant computing part, redundant power supplies and protection against short circuit, line overload or current leakage, and is also insufficiently protected from electromagnetic interference on the power network and RS-485 channels.

Disclosure of Invention

The technical problem of the present invention is to overcome the technical disadvantages inherent in analogues, which leads to the need to create a multifunctional control point I / o discrete signals (hereinafter referred to as the controller), having a simple and reliable design, providing effective control of the parameters of technical means (devices) of the lower level of the control system and information exchange between lower and upper level devices.

The technical result of the present invention is to increase the efficiency of monitoring the parameters of lower-level devices and increasing reliability, as well as expanding the functionality of the controller, which consists in ensuring the efficient transfer of data converted according to certain algorithms between lower-level devices and upper-level devices, as well as providing the ability to transmit converted data from monitoring system, with the help of which an additional increase in reliability electrical power circuit unit, a controller to control access to devices, and climate control parameters in the device, current and voltage (hereinafter - the monitoring system).

The technical result is achieved due to the implementation of the input-output controller of discrete signals, comprising a housing in which at least two programmable converters of serial RS-485 interfaces (hereinafter referred to as RS-485 switches) are installed that are capable of collecting data from lower devices level and their configuration via RS-485 channels, conversion for further transmission via Ethernet channels to the primary and backup Ethernet switches, as well as data transmission from the main and redundant Ethernet switches to lower-level devices via RS-485 channels, while the primary and backup Ethernet switches are connected via the primary and backup Ethernet channels to the primary and backup processor units, and the processor units are capable of converting the received data according to a given algorithm and transmitting the converted data through the primary and backup Ethernet switches to upper-level devices via Ethernet channels, or through the primary and backup Ethernet switches connected to RS- switches 485, to upper-level devices via RS-485 channels.

The controller can be used as a gateway for interfacing to ensure information exchange between the segments of the automated process control system and / or the automated radiation control system (ASRK) of the nuclear power plant, as well as to receive, process and transmit data from lower-level devices to the automatic control system.

The controller of input-output of discrete signals can exchange data with any device (or devices) of the lower level, configured to connect via the RS-485 channel, as well as any device (or devices) of the upper level, configured to connect via the Ethernet channel or RS-485.

RS-485 channel switches can be connected to terminators to ensure RS-485 line matching and protection against electromagnetic interference on the channels.

The primary and backup Ethernet switches can be configured to transmit data through the Ethernet 10/100 Base-TX and Ethernet 100 Base-FX interfaces.

The controller may contain primary and backup media converters connected via independent 10/100 Base-TX Ethernet channels to the main and backup processor units, respectively, used to convert data for transmission via fiber-optic channels with Ethernet 100 Base-FX to upper-level devices, which ensures data exchange with top-level devices on separate lines from individual ports of the main and backup processor units, which increases the reliability and security of the device.

The processor units can be connected by duplicating fiber optic channels to upper-level devices.

The main and backup power supplies of the processor units, the primary and backup power supplies of the RS-485 switches, the primary and backup power supplies of the Ethernet switches and media converters can be installed in the controller, and the above power supplies are connected respectively to the primary and backup automatic differential current circuit breakers (hereinafter - AEDT) connected through a line filter to the mains ~ 220 V (± 15%) 50 Hz (± 6%).

Each RS-485 channel switch can contain 10 ports for connecting with lower-level devices, which provides enhanced functionality of the claimed controller.

As the lower level device, detection blocks or devices can be used, for example, the BDMG-100-07, BOP-04m, or UDA-1AB, or UDG-1B, or UDI-1B, or ARG-31.2 block.

As top-level devices of an automated system, devices that are part of an automated process control system can be used, for example, an automated workstation of a radiation control system (AWS SRK) or a server of a radiation control system (server AWS) or an automated workstation of a system of upper block level (AWS SVB ) or an automated workstation of the upper station level system (AWS SSSU).

A monitoring system connected to a surge protector can be connected to the processor units via the USB interface, which can contain pressure, temperature, and humidity sensors to monitor microclimate parameters inside the device, a door open sensor to prevent unauthorized access to software and hardware, which controls the power of devices included in the design of the controller, to determine their status, and can also provide duplication of power supply of the backup processor unit for sheniya reliability of the equipment.

In addition, the structural elements of the controller can be mounted inside the controller housing on DIN rails to ensure ease of installation and access to the elements.

Description of drawings

The claimed invention is illustrated by drawings, which depict the following:

In FIG. 1 is a block diagram of a controller;

In FIG. 2 is a block diagram of a particular embodiment of a controller.

The positions in the figures indicated:

1) Case

2) First lower level device (NU)

3) Second lower level device (NU)

4) First RS-485 switch

5) Second RS-485 switch

6) Main Channel Ethernet Switch

7) Ethernet switch redundant channel

8) CPU unit of the main channel

9) CPU unit of the backup channel

10) The upper level device (WU)

11) Surge Protector

12) AVDT of the main channel

13) AEDT backup channel

14) The power supply unit of the main channel first

15) Power supply backup channel first

16) The power supply of the main channel of the second

17) The power supply of the backup channel of the second

18) The power supply unit of the RS-485 switches main

19) Terminator of the first RS-458 switch

20) Terminator of the second RS-485 switch

21) Media Converter of the main channel (MK)

22) Backup Channel Media Converter (MK)

23) The second upper level device (WU)

24) The power supply unit of the main channel is the third

25) The main channel power supply fourth

26) Power supply backup channel third

27) Fourth backup power supply unit

28) Monitoring system

The implementation of the invention

In FIG. 1 shows the controller, which is executed in the housing 1. Data from lower-level devices 2,3 via RS-485 channels is fed to interconnected RS-485 4,5 switches, where the data is converted for transmission via Ethernet 100 Base TX channels, and then via Ethernet 100 Base TX through the main 6 and standby 7 Ethernet switches data is transferred to the main 8 and standby 9 processor units. The processor units 8, 9 process the data received on them and transmit via the main and backup Ethernet 100 Base TX channels through the main 6 and 7 backup Ethernet switches to a top-level device 10, for example, an automated workstation.

The controller is powered by ~ 220 V (± 15%) 50 Hz (± 6%). The power is supplied to the line filter 11, from where it is distributed to the AVDT 12.13 to power the main and backup channels. From the CBA of the main channel 12, the power is supplied to the power supply 14, which provides voltage conversion for powering the main processor unit 8, to the power supply 16, which provides voltage conversion to power the Ethernet switch of the main channel 6 and to the power supply 18, which provides power to the RS-485 switches. Power is supplied from the backup channel 13 AEDT to the power supply unit 15, which provides voltage conversion to power the backup processor unit 9 and to the power supply unit 17, which provides voltage conversion to power the Ethernet switch of the backup channel 7.

In FIG. 2 shows a private version of the controller. The controller is executed in housing 1. Data from lower-level devices 2,3 is transmitted via RS-485 channels to 19,20 terminators, respectively connected to RS-485 4,5 switches connected to each other, where data is converted for transmission via Ethernet 100 Base channels TX, after which Ethernet 100 Base TX channels through the main 6 and standby 7 Ethernet switches transfer data to the main 8 and standby 9 processor units. The controller also contains a monitoring system 28, including temperature, humidity, pressure sensors, a sensor for opening the door of the controller, and also provides control of power parameters. Information collected by the monitoring system 28 via USB is also transmitted to the processor units 8.9. The processor units 8.9 process the data received on them and transfer them via the primary and backup Ethernet 100 Base TX to the top-level device, as well as through the media converters of the primary 21 and backup 22 channels via the Ethernet 100 Base FX, to the second top-level device 23, for example, SSB.

The controller is powered by ~ 220 V (± 15%) 50 Hz (± 6%). The power is supplied to the line filter 11, from where it is distributed to the AVDT 12.13 to power the main and backup channels. From the CBA of the main channel 12, the power is supplied to the power supply 14, which provides voltage conversion for powering the main processor unit 8, to the power supply 16, which provides voltage conversion to power the Ethernet switch main channel 6 and the media converter of the main channel 21, as well as power supplies 24 and 25 of the main channel, providing voltage conversion for powering the sensors installed in the monitoring system 28, RS-485 4,5 converters, as well as powering the backup processor unit 9. From the backup channel 13 the power is supplied to the power supply 17, which provides voltage conversion for powering the Ethernet switch of the backup channel 7 and the media converter of the redundant channel 22, as well as to the power supplies 26 and 27 of the backup channel, which provide voltage conversion to duplicate the power of the sensors installed in the monitoring system 28, and power redundancy of the backup processor unit 9.

Specific implementation examples

The controller can be made in the following form.

As a cabinet, the Rittal AE-1090.500 Compact Switchboard can be used, inside which 3 RS-485 PDS-5105D-MTCP switches are installed, converting the signals arriving at them and transmitting them via redundant Ethernet 100 Base-Tx channels to the main and backup Ethernet switches , for example, SWD-42F-MM-SC, from where data on Ethernet 100 Base-TX channels go to the main and backup processor units NANO-ULT3-C-R10, in which data from the lower-level devices is processed. Further, the signal through ports 1 of the main and standby processor units via the main and standby Ethernet 100 Base-TX channels is fed to the main and standby Ethernet switches SWD-42F-MM-SC, respectively. The converted signal from the SWD-42F-MM-SC switches via Ethernet 100 Base-TX channels is fed to the automated workstation of the radiation monitoring system.

The configuration of the processor units can be carried out through a PC or top-level devices via Ethernet, RS-485 or RS-232 channels.

The power supply of the electrical circuits of the controller is as follows. The mains supply ~ 220 V 50 Hz is supplied to a surge protector, for example, Barrier-C1, after which it is sent to the Legrand DX3 1P + N-16-30mA main and backup circuit breakers. Further, the power from the AEDT is supplied to the primary and backup MDR 60-12 power supplies, the processor units, as well as to the primary and backup MDR 20-24 power supplies, the Ethernet switches and the primary and backup MDR 40-24 power supplies, the RS switches -485.

Another embodiment of the controller is the following. As a cabinet, a Rittal AE-1090.500 compact distribution cabinet can be used, inside which there are 3 RS-485 PDS-5105D-MTCP switches, which convert the signals arriving at them and transmit them via redundant Ethernet 100 Base-TX channels to the primary and backup Ethernet switches , for example, SWD-42F-MM-SC, from where data on Ethernet 100 Base-TX channels go to the main and backup processor units NANO-ULT3-C-R10, in which data from the lower-level devices is processed. The controller also contains a monitoring system, including temperature, humidity, pressure sensors, providing control of power parameters, as well as a sensor for opening the controller door. Information collected by the monitoring system via USB channels is also transmitted to the processor units. Further, the processed information through the independent ports 1 of the main and standby processing units via the main and standby Ethernet 100 Base-TX channels is transmitted to the main and standby Ethernet switches SWD-42F-MM-SC, respectively, after which it goes through the Ethernet 100 Base-TX channels to the automated the workplace of the radiation monitoring system, and through the independent ports of the 2 main and backup processor units via the main and backup Ethernet channels, the Base TX passes to the primary and backup Mokha IMC-101-M-SC-T media converters, respectively, after which eobrazovanny signal switches Moh IMC-101-M-SC-T for Ethernet channels 100 Base-FX is transferred to the radiation control system server.

The power supply of the electrical circuits of the above controller is as follows. The mains supply ~ 220 V 50 Hz is supplied to a surge protector, for example, Barrier-C1, after which it is sent to the Legrand DX3 1P + N-16-30mA main and backup circuit breakers. Further, the power from the AVDT is supplied to the MDR 60-12 power supply unit, which provides power to the main processor unit, the MDR 20-24 main and backup power supplies, the Ethernet switchboards and media converters, to the MDR 40-24, MDR 60-12 main power supplies, and accordingly, redundant power supplies MDR 40-24 and MDR 60-12, providing power and duplication of power for sensors installed in the monitoring system, RS-485 switches, as well as a backup processor unit.

In the above versions, the overall dimensions of the controller are not more than:

- height taking into account fastenings - 1250 mm;

- width, taking into account fastenings - 800 mm;

- Depth taking into account fastenings and the lock - 350 mm.

Normal climatic conditions of the controller are:

- temperature is from 15 to 35 degrees Celsius;

- humidity from 40 to 80%;

- atmospheric pressure from 84 to 107 kPa.

Parameters of devices of the lower level: the ability to connect via RS-485.

Parameters of top-level devices: the ability to connect via Ethernet or RS-485.

Thus, the design of the claimed control point of input-output of discrete signals is reliable during operation, and provides high accuracy and efficiency when monitoring the parameters of devices of the lower level and information exchange between devices of the lower and upper levels.

Claims (10)

1. The control point I / o discrete signals, consisting of a housing containing power supplies, converters serial interfaces RS-485, Ethernet switches, characterized in that it has at least two interconnected programmable converters serial interfaces RS-485, made with the ability to collect data from lower-level devices and configure them via RS-485 channels, conversion for further transmission via Ethernet channels to the primary and backup Ethernet switches, and the data coming from the primary and backup Ethernet switches to lower-level devices via RS-485 channels, while the primary and backup Ethernet switches are connected via the primary and backup Ethernet channels to the primary and backup processor units, and the processor units are capable of conversion received data according to a given algorithm and transferring the converted data through the primary and backup Ethernet switches to upper-level devices via Ethernet channels, or through the primary and backup ommutatory Ethernet, switches connected to RS-485, RS-485 on the channels at the upper level device. 2. The control point of the input-output of discrete signals according to claim 1, characterized in that the programmable converters of the serial RS-485 interfaces can be connected to terminators to ensure a consistent load and protection against electromagnetic interference on the channels. 3. The control point of the input-output of discrete signals according to claim 1, characterized in that it can exchange data with any lower-level device configured to connect via RS-485 channel, as well as with any upper-level device configured to Ethernet or RS-485 connection. 4. The control point of input-output of discrete signals according to claim 1, characterized in that each programmable converter of RS-485 interfaces contains 10 ports for connection with lower-level devices. 5. The control point of the input-output of discrete signals according to claim 1, characterized in that a block or a detection device can be used as a lower level device. 6. The control point of the input-output of discrete signals according to claim 1, characterized in that as a top-level device, a device that is part of an industrial control system can be used. 7. The control point of the input-output of discrete signals according to claim 1, characterized in that it contains a monitoring system consisting of pressure, temperature, humidity, door openers and controls the power supply of devices included in the controller design to determine their status and possible access to them, connected to the processor units. 8. The control point of input-output of discrete signals according to claim 1, characterized in that the structural elements of the controller are installed inside the device housing on DIN rails. 9. The control point of input-output of discrete signals according to claim 1, characterized in that power units are connected to the processor units, programmable converters of serial RS-485 interfaces and Ethernet switches, as well as redundant power units connected to the differential current circuit breakers connected through the line filter to the power supply network. 10. The control point of input-output of discrete signals according to claim 9, characterized in that it has primary and backup media converters configured to transmit converted data coming from the processor units to the upper level device via Ethernet 100 Base-FX channels, respectively connected to the primary and backup power supplies of Ethernet switches.

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