RU69655U1 - COMPLEX OF TELEMECHANICS - Google Patents

Abstract

The utility model relates to the field of automation of process control and can be applied in trunk pipelines, gas metering stations, utility metering centers, electric power and industrial enterprises. The technical result is the expansion of functionality, the scope of the telemechanics complex. Into the telemechanics complex, consisting of a control point connected via modems to controlled points and via radio stations to other controlled points, including satellite controlled points connected to remote technological equipment and to the main controlled point, encrypted / decoded information transmission devices connected to the control center and modems and radio stations; the structure of the controlled point includes: an information collection and processing device (USOI), containing a microprocessor device and an anti-jamming device (terminal block), through which the USOI is connected to technological equipment; a device for interfacing with a corrosion monitoring system (SCM); automatic control system for the consumption of SAUR; automatic control system for gas distribution stations (GDS); security and video surveillance system, the microprocessor device comprising a QNX real-time operating system microprocessor controller, a power board, a port expansion card, and analog and discrete input / output functional modules integrated by an ISA passive control / data bus.

Description

The utility model relates to the field of automation of process control and can be applied in trunk pipelines, gas metering stations, utility metering centers, electric power and industrial enterprises.

Telemechanics complexes for main gas pipelines are known that provide continuous remote measurement and control of technological parameters of the working gas (temperature, pressure and differential pressure), cathodic protection potential, voltage, output current of cathodic protection stations, as well as control and regulation of actuators and tele-signaling of the state of technological objects [1] (Moskad), [2] (Highway-2), [3] (STN-3000), [4] (EEC TM).

Closest to the claimed utility model is the information-measuring complex UNK TM based on the MP KP [4], consisting of control center equipment (CP), which is installed in the control center of the gas transmission enterprise (at the compressor station of the linear production management of gas pipelines of LPU MG) , equipment of the lower level of control - a controlled point (KP), which is installed on a linear crane site of the main gas pipeline and communication channel equipment.

PU is a complex of software and hardware tools consisting of several personal computers (dispatcher, engineer and manager), a file server and an information concentrator, which ensures automatic measurement functions for measuring technological parameters and controlling the output parameters of cathodic protection stations,

condition monitoring and control of technological facilities on the crane platforms of the main gas pipeline.

PU provides:

- automatic data collection and processing in accordance with specified algorithms;

- registration, archiving and storage for at least 30 days of information about the actions of the operator and other system events;

- display on the monitor screen of current and retrospective information about the state of the controlled process (object) in the form of mnemonic diagrams, tables, graphs;

- issuing and tracking the stages of the execution of telecontrol and teleregulation commands by technological processes (objects);

- sound and color alarm and warning alarms;

- access control to control functions and changes to configuration parameters;

- turning on / off from the polling mode both specific sensors and the full CP;

- collection and display of data from gas flow calculators;

- synchronization of the time of PU and KP;

- printing of protocols (logs) of events with a sample of the types of events and the time of their occurrence;

- interaction with higher-level control systems.

The CP consists of a communication device, a microprocessor controller, a device for matching with an object, and an uninterruptible power supply device.

The telemechanics complex, consisting of controllers and several controllers, operates under the control of software that provides continuous collection of technological information, its display and archiving on a PC.

The connection between the upper level (PU) and the lower level (CP) is carried out via communication channels organized from modems, radio stations and radio modems. The structure of communication channels with the gearbox can be radial, chain, or a combination thereof.

The disadvantages of the known complex are: a significant increase in the delivery time of a message about an abnormal change of parameters with an increase in the number of CPs, the lack of encoding / decoding functions of transmitted information with error correction, which reduces the reliability of the transmitted information, the level of cryptographic protection, and also increases the measurement error during operation of the complex near various sources of interference.

The technical result of the utility model are:

- expanding the functionality and, as a consequence, the scope of the telemechanics complex, namely its use for automatic control of gas distribution stations (GDS), utilities and industry, automatic regulation of actuators, security and video surveillance;

- improving the reliability of control of technological equipment;

- increasing the reliability of the transmitted information;

- increasing the cryptographic protection of information;

- improving the measurement accuracy and reducing the measurement error of technological parameters;

- improving the reliability of operation in harsh climatic conditions.

The technical result is achieved by the fact that in the telemechanics complex, consisting of a control point connected via modems to controlled points and via radio stations to other controlled points, including satellite controlled points connected to remote processing equipment and to the main controlled point, the radio stations are made two-channel and connected to telephone sets, encoding / decoding devices of transmitted information with the possibility of using numerical coding with additional information redundancy when transmitting high-order message bits, providing high accuracy of television measurements, connected to the control center and modems and radio stations; an information collection and processing device (USOI) containing a microprocessor device and an anti-jamming device (terminal block) through which the USOI is connected to technological equipment was introduced into the controlled point; a device for interfacing with a corrosion monitoring system (SCM) connected to a corrosion monitoring system and a microprocessor device; automatic control system of the SAUr flow rate, connected to the control unit of the crane-regulator and to the microprocessor device; automatic control system of gas distribution stations (GDS), connected to the control equipment of the GDS and to a microprocessor device; security and video surveillance system connected to security sensors and cameras

CCTV to a microprocessor device, and the microprocessor device contains a real-time QNX-controlled microprocessor controller, a power board, a port expansion card, and analog and discrete input / output functional modules combined by an ISA passive control / data bus.

Figure 1 shows the General block diagram of the construction of a telemechanics complex.

The telemechanics complex (Fig. 1) consists of the equipment of a control point (PU) 1 connected via an encoding / decoding device (codec) 2 of transmitted information and a radio station (PC) 3 and modems 4 to controlled points (CP) 5 located on crane platforms gas pipelines. Telephone sets (TLFs) are connected to the radio stations 3. 6. A portable computer such as Notebook 7 can be connected to KP 5.

The equipment of KP 5 is built according to the functional-modular principle.

The microprocessor device consists of a microprocessor controller (MPC) 8 and functional modules.

- IPC 8 is the intelligent USOI core (and the CP), which is connected via the ISA passive control / data bus to the port expansion card 9, the power board 10, and the analog and discrete input / output functional modules to which the process equipment 11 is connected.

- AI 12 analog input / output module performs the functions of telemetry (TI) and teleregulation (TP). The AI module converts the TI signals into a digital code, which are transmitted via the ISA bus to the IPC. In the channels for measuring the protective potential (PCZ) and supply voltages

(network and backup), analog signal converters are installed, which, in addition to converting input signals to a unified voltage (or current), provide inter-channel galvanic isolation for each input of a TI. The AI module converts the digital TP code coming through the ISA bus from the microprocessor controller into a proportional voltage from 0 to 5 V. The TP signal in the form of voltage is supplied to the analog signal converter, converted into a unified current signal from 0 to 20 mA and through a lightning device - (interference) protection (TR output) is fed to the input of the teleregulation object;

- module DO 13 discrete output performs the functions of telecontrol (TU). The TU signal from the IPC via the ISA bus is sent to the DO module, which is switched on in open collector mode, and then to the executive relays through the terminal board. Executive relays are connected to executive mechanisms and provide switching of a direct voltage of 24 ± 3 V, or 110 ± 11 V;

- the digital input module DI 14 performs the functions of a telealarm system (TC). The DI module polls “dry contacts” with a current signal of 5 mA, converts the vehicle signal into a digital code and then transfers it to the microprocessor controller via the ISA bus;

- power board 10 performs the functions of power supply IPC 8 and modules 9, 12, 13, 14.

All external input and output signals are supplied to the functional modules of analog and discrete input / output via lightning (noise) protection devices or terminal block 15.

In addition, KP 5 includes:

- uninterruptible power supply (UPS) 16, providing power to all the equipment KP, and consisting of a converter of AC voltage 220 V to DC 24 V and batteries;

- a signal counter (CC) 17, performing the reading of signals from turbine and rotary gas meters 18, and consisting of input nodes optocoupler, programmable anti-bounce circuit, dividers and information storage registers.

The following are connected to the MPU via the RS-485 remote access interface:

- satellite controlled point (UPC) 19, designed to control uninformative objects (for example, a freestanding crane 20 remote from KP 5);

- SKZ 21 controller, which controls the parameters of the cathodic protection stations (SKZ) 22 remote from the KP 5, namely, the output voltage, output current, and cathodic protection potential;

- automatic control system for the consumption of SAUr 23, which performs automatic control by actuators (valves by regulators) according to the PID law;

- automatic control system for gas distribution stations SAU GRS 24.

- security system and video surveillance.

KP 5 also includes a control unit for the end positions of shutoff valves (BKP) 25, made on the basis of an optoelectronic pair, the infrared radiation flow through which is interrupted by a shutter mechanically connected to the shutoff valve shaft.

The functioning of the telemechanics complex is as follows. From technological equipment 11, TI 0-20 mA signals proportional to physical parameters (pressure, temperature) are supplied to the anti-interference device (terminal block) 15 and through it to AI 12 modules, which convert them to digital form and program processing (averaging and comparison with a given value).

The scheme for constructing TI channels provides the reception and conversion into a digital code of analog signals from sensors of physical parameters of temperature, pressure, differential pressure and sensors measuring the potential of the "pipe-to-ground". In order to reduce errors in the transmission of television measurements, numerical coding with individual bit signals with additional information redundancy in the transmission of high bits is used.

When deviating from the set value, the TI signals are converted into a noise-resistant digital code, which is transmitted through PC 3 or modem 4 to the control unit 1. On the control unit 1, the inverse conversion from the digital code to the TI values of the physical dimension (pressure, temperature) is displayed and archived by the control unit one.

Calculation of gas flow is based on data received from gas flow meters 18. Signals from gas flow meters 18 in the form of pulses are fed to the input of the CC 17 module, where they are converted into a code that is transmitted to the IPC 8. Calculation of the flow rate is performed by the software of the CP 5 recorded in the IPC 8.

Similarly, signals from the vehicle and the integrity control of the solenoid circuits (CS) are transmitted from KP 5 to PU 1. The difference is in the different level of ohmic resistance of the tested circuits. Received PU 1 signals TI, TS, KS are transmitted to the upper level of the compressor station.

Telecontrol (TU) and teleregulatory (TP) commands are transmitted from the control unit 1 in the form of a noise-free digital code via PC 3 or modem 4 to the control unit 5. In MPK 8, the code of the received control and control commands is decrypted, which are converted via DO 13 and AI 12 modules to the corresponding power telecontrol signals with a voltage of 0-24 V or 0-110 V and teleregulation signals 0-20 mA supplied to the control objects of technological equipment.

Dispatch (voice) communication signals are transmitted / received through telephone sets TLF 6 to PC 3 (via a separate channel).

Text messages (telegrams) are transmitted / received through a laptop computer such as Notebook 7, connected to one of the CP 5.

Detached remote technological objects are controlled through SKP 19. Signals of TI and TS from an object of type crane 20 are sent to SKP 19, where they are processed and converted into a digital code, which is sent to USOI from KP 5. via the RS485 interface KP 5 the digital code is relayed to the control unit 1 via PC 3 or modem 4. The TU signals from the control unit 1 to the object crane 20 are transmitted in reverse order.

The monitoring of the cathodic protection stations 22 is carried out by a specialized SKZ 21 controller. Signals of television measurements and telealarm systems from the SKZ 22 are fed to the SKZ 21 controller, where they are processed and converted into a digital code. Further, these signals are transmitted via the RS485 interface to USOI from KP 5, which, as a repeater, transfers them further to PU 1. Te commands TU and TP are transmitted from PU 1 through PC 3 or modem 4 to KP 5 and from it in the form of a digital code to the controller RMS 21, which converts them into control signals supplied to RMS 22.

Improved technical and economic indicators of the utility model are achieved by optimizing the structure of the telemechanics complex, which eliminates the redundancy of technical means, reducing the cost of cable products, reducing the complexity of commissioning, maintenance and repair.

Thus, the use of the inventive utility model will significantly (not less than 1.5 times) reduce the cost of complex automation of medical facilities MG, taking into account GDS and VHC.

Literature:

1. Systems of supervisory control and management. Catalog. LLC NPA VIRA REALTIME

2. Telemechanics complex “Magistral-2”. Manual

3. Promotional materials of Atlantiktransgazsistema JSC using the STN-3000 telemechanics system.

4. Patent for utility model RU 29594 U1. Telemechanics complex (prototype).

Claims (1)

The telemechanics complex, consisting of a control point connected via modems to controlled points and via radio stations to other controlled points, including satellite controlled points connected to remote processing equipment and to the main controlled point, the radio stations are made two-channel and connected to telephone sets, characterized the fact that the complex includes encoding / decoding devices for transmitted information with the possibility of using a numerical encoder working with additional information redundancy when transmitting high-order bits of messages, ensuring high accuracy of television measurements connected to the control center and modems and radio stations; The structure of the controlled point includes: an information collection and processing device (USOI) containing a microprocessor device and an anti-jamming device (terminal block) through which the USOI is connected to technological equipment; a device for interfacing with a corrosion monitoring system (SCM) connected to a corrosion monitoring system and a microprocessor device; automatic control system for the SAUr flow rate, connected to the control unit of the crane-regulator and to the microprocessor device; automatic control system of gas distribution stations (GDS) connected to the gas distribution control equipment and to the microprocessor device; a security and video surveillance system connected to security sensors and video surveillance cameras and a microprocessor device, the microprocessor device comprising a microprocessor controller controlled by the QNX real-time operating system, a power board, a port expansion card, and analog and discrete input / output functional modules integrated by a passive control bus / ISA data.