6.1 Automated and emerging technologies

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Automated Systems

1. What is an Automated System?

An Automated System is a combination of software and hardware designed to function without human intervention. It collects data, processes it, and takes action automatically to maintain a desired state.

2. How it Functions (The Loop)

Automated systems rely on a Feedback Loop. The output of the system eventually affects the input.

SENSORS
(Input)
➔
MICROPROCESSOR
(Process)
➔
ACTUATORS
(Output)
  1. Sensors continuously take analogue readings from the environment.
  2. Data is converted to digital via an ADC.
  3. The Microprocessor compares the data to pre-set values stored in memory.
  4. The processor sends signals to Actuators to change the environment if necessary.

3. Real-World Examples

Industry: Nuclear Power

Automated systems manage rod temperatures and cooling. Humans are too slow to react to a sudden meltdown threat.

Transport: Self-Driving Cars

Uses LiDAR and cameras (sensors) to stay in lanes and brake automatically for pedestrians (actuators).

Agriculture: Smart Irrigation

Moisture sensors trigger water valves only when the soil is dry, saving massive amounts of water.

Weather: Storm Warnings

Monitors air pressure and wind speed to automatically trigger sirens or digital alerts for residents.

4. Advantages and Disadvantages

Advantages
  • Safety: Works in high-risk zones.
  • Efficiency: Faster than human labor.
  • Accuracy: No "human error" or fatigue.
  • Cost: Long-term savings on wages.
Disadvantages
  • Initial Cost: Very expensive to set up.
  • Maintenance: Requires highly skilled technicians.
  • Job Loss: Leads to unemployment for manual workers.
  • Failure: If a sensor fails, the whole system might crash.
⚠️ Exam Alert: When asked how an automated system works, always explicitly mention the Microprocessor comparing data to Stored/Pre-set limits. This is a common marking point!