Advantech PCA-6751 Series Uživatelský manuál stáhnout pdf (Strana 10)

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System Description:

A Centralized Measuring, Supervisory & Control System, this system is intended to operate automatically, with little manpower present. There

are 24 main nodes in the water supply system, each with one or more branches. The nodes with more than two branches or those that

provide data to the local Municipality are treated as important nodes. There is at least one precise water  ow measuring instrument and one

motor-operated valve in each remote station. With ADAM-5050 I/O modules, ADAM-5510 works as a local controller to read data from Flow

Meter via IAC24A modules and controls the valve through OAC24A modules. It will create data log in its battery back-up memory for the

measured values, events, valve status and alarms, and transfer all data to a data server via ADAM-4581. It will also transfer requested data from

the central computer via ADAM-4581. With ADAM-4581 modules, local controllers or industrial computers in the whole system work inside

of the GSM network. On the other hand, the Central Computer can send a new Water Sharing Principle to the local controllers directly or

automatically for any changes.

Conclusion:

A water supply system is a very complex and complicated model, consisting of a long main pipeline with many branches, valves,

and hybrid mechanical devices. Though the physical elements are a long-term constant, it is di cult to set up a proper control

mechanism for the entire system. Only PC-based controllers provide fast enough computing performance, adequate memory size, good

communication interface, and simple programming languages to successfully reach the goals of this project. It is important to note

that almost all controlled nodes are outside of urban areas where no wired telephone lines exist. That is why it was decided to go with

wireless communication, using ADAM-4581 as the main communication device in a WAP/GSM network. Because there is no need for

fast and frequent data exchange in this project, the communication charges in the system are very low.

A high-performance and reliable water supply control system was achieved, which can properly adjust water levels at all branches o of

the main pipeline, and provide adequate water sharing between all users. Furthermore, its precise measurement and communication

abilities decrease  nancial, operational, and maintenance costs.

System Diagram

Control and Monitoring of a Regional Water

Supply System

Facility Management

Macedonia

Project Introduction:

“Studencica” is a Public Enterprise, distributing quality drinking water to cities and villages

in the central & western regions of Macedonia, having a total length of more than 130km of

main pipeline.

The goal of the project is to centralize the measurement of water consumption and remotely

control the water  ow level in each node (branch), as well as to collect all the information

about the status and alarms from the actuators.

System Requirements:

In a regional water supply system, many di erent users (like municipalities, villages, industrial enterprises, and power plants) are connected

directly to the same system, and they all expect good quality water everyday. A Centralized Control and Monitoring System has to be

established in order to provide the same level of water to every user at all times, especially during dry periods, which can last for many years.

By the implementing a Centralized Control and Monitoring System, the customer hoped to achieve:

• Precise and centralized measurement of the water  ow in all main branches and supply points at all times, with the ability to measure water

usage during speci c  scal periods.

• Depending on the available quantity of inlet water from the wheels, and based on the prede ned government approved water distribution

laws, the central computer remotely regulates the water  ow at each node, providing an exact quantity of water to every user, so that no

one branch gets a higher privilege.

The overall enhancements of this system should also include:

• Dramatic reduction of sta required to operate the system.

• Reduction of the operation and maintanance costs.

• Improvement of the security and safety of the equipment, pipeline and water.

Project Implementation:

ADAM-5510:

PC-based Programmable

Controller

PCLD-7216:

16-ch SSR I/O Module Carrier Board

IAC24A: AC Input Module (180 – 280 VAC)

OAC24A: AC Output Module (24-280 VAC)

ADAM-4581:

1-port GSM to RS-232/422/485

Data Gateway

PC-610P4:

Industrial Computer Chassis

PCA-6004H:

VIA C3 800 MHz (onboard

CPU) Card with HISA/VGA/

LAN/LCD

PCL-858B

8-port High-speed RS-232

Communication Card

PCI-1752/54:

64-ch Isolated Digital/Input

Output Card

FPM-3150TVE-T:

Industrial Flat Panel Monitor with

15" LCD in Direct-VGA Port with

Touch Screen

Special developed control

algorithms and software provided

by solution partner

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