What is Real Time Embedded System

Definition: A real time embedded system is combination of both technologies of embedded systems and real-time computing. You also can say that it is a sub-domain of embedded systems.

Real-time Embedded Systems is used at such area where to need result at specific time period. So this Real-time Embedded Systems is used in military, medical and industrial sectors. If, their assigned tasks have to be done on it given proper time frame otherwise they are deadline for their projects. To control outer environment, to use the computer system and their connected several sensors or input/output interfaces. Here, you have right to schedule output with using of static or dynamic ways.

To design the Real-time Embedded Systems, we need timing analysis, multitasking design, debugging, and cross-platform testing and architecture design. To improve performance and avoid failures, excellent hardware is embedded in these types of systems.

Examples of Real Time Embedded Systems

There are different types of real life examples of real time embedded system; below explain each one –

Medical Sector

MRI (Magnetic resonance imaging)
CT scanners
Ultrasound scans
Laboratory analytical equipments
Radiation therapy
Patient monitoring
Defibrillation

Transportation Sector

These embedded systems are used into modern vehicles (cars, trucks, ships, trains, planes) along with numerous sensors, GPS (Global Positioning System) trackers, Anti – lock Braking System or ABS and control systems as well as airbags.

Traffic control for airspace, highways, railway tracks, and shipping lanes

Manufacturing Sector

Real time embedded systems are also used into advance plants and factories like as robotics, AI systems and IoT devices perform various processes.

Monitoring sensors control assembly-line operation

Specific machinery working conditions like as temperature, humidity, pressure, vibration and other variables, predicting possible failures

Process Control

Power plants
Chemical plants
Consumer products such as soft drinks and beer

Defense Sector

Firing weapons
Tracking
Command and control

Advance houses and Cities

Smart homes and cities are getting more popularity due to introduce of Internet of Things techniques and real-time embedded systems.

Smart lighting, heating and air conditioning which people can manage through smart phone

Smart parking, communication systems, digital signage with multimedia content, surveillance systems all utilize real-time embedded systems to function.

Applications of Real Time Embedded Systems :

Missile Guidance Systems

Space Exploration (Rovers)

Controlling of light, heat or elevators in smart building by mobile application

Telephone and Radio communication

Computer based games

Pacemakers

Multimedia systems that offer text, graphic, audio, and video interfaces

Programmable logic controllers

Types of Real-Time Embedded Systems

Soft Real Time Embedded Systems

In soft real time systems, to consider the processes like as main task, and control the entirely task. Deadlines are not allowed as a priority, if any case deadlines are omitted then omitting processes should not occur in the Soft Embedded Systems.

Examples of Soft Real Time Embedded Systems

Personal computer
Audio and video systems
Set top boxes
DVD Players
Weather Monitoring Systems

Hard Real time Embedded Systems

In hard real time system, to consider timelines as a deadline, and it should not be omitted in any circumstances. Hard Embedded Systems does not use any types of permanent memory, so their processes must be complete properly in the first time itself.

Hard Real Time System must generate accurate responses to the events within specified time period.