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Design basic scada system
Scada historian data analysis
SCADA Systems (Supervisory Control and Data Acquisition Systems) have
become integrated part of automated systems and have provided a greater
degree of reliability along with increased efficiency to these tasks.
As clear from the name, itself SCADA systems are not any control
systems but supervisory systems. They supervise automated tasks and
take decisions on their own if any state/ parameter changes more than
permissible value. Thus, these systems require minimal human
intervention and can be addressed as closed loop systems. But human can
intervene at any point of time, thus making these systems flexible to
use.
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SCADA (Supervisory Control and Data Acquisition) systems have
altogether made the task of automation efficient and reliable.
Though the development of SCADA systems began way back in 1960s but
with the recent trends in technology have evolved these systems too and
now from small scale applications to big time applications and now
SCADA systems are involved in almost all controls systems irrespective
of the fields.
Thus, SCADA has found its existence in water control systems, whether
control systems, electricity control systems and now into wireless
systems. Now various SCADA VHF industrial products are getting into
existence which have evolved wireless industry too and ushered a new
era of wireless technologies. |
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General Directions for SCADA in the Water Industry
If
the project encompasses large area to be surveyed and human
surveillance in not possible in such case, then one needs long distance
SACDA radio networks to be employed for sending the data collected from
remote sensors to central unit.
When area under surveillance is hundreds of kilometres such as in case
of petroleum pipeline, the only feasible solution is long distance
Scada GSM. Most important requisite for long range Scada GSMs
is ability to transmit the data to long distance.
For such purposes, repeaters are used as line of sight is limited to 5
miles. Repeaters are radio transmitters which act as boosters for
signals as signals tend to get weak after travelling certain amount of
distance. Thus repeaters boost the attenuated signals and again
transmit them to next repeater/ central system.
Related Topics: Design basic scada system,
Scada in the gas industry, Radio communication scada products
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