Embedded System In Automobiles , Seminar Reports | PPT | PDF | DOC | Presentation |

Most of the microprocessors in the world are not in pcs, they are embedded in devices which control traffic  for highways, airspace, railway tracks, and shipping lanes to manufacturing systems with robots. An embedded system is any device controlled by instructions stored on a chip. These devices are usually controlled by a microprocessor that executes the instructions stored on a  read only memory (ROM) chip. This the topic of my seminar. Embedded systems can be used to implement features ranging from the way pacemakers operate and mobile phone that can be worn as jewellery to adaptive cruise control(ACC). In this seminar I will explain one such technology  that uses the embedded systems- The Adaptive Cruise  Control.

We read in newspapers that a doctor had successfully transplanted a  cardiac pacemaker in his patient’s chest by sitting around 200kilometres away. Also we know about driverless cars that could take us to the destiny  by using its inbuilt navigation systems. Embedded microprocessors or  micro controllers are the brain behind these. An embedded system is any device controlled by instructions stored  on a chip. These devices are usually controlled by a micro processor that executes the instructions stored on a  read only memory(ROM) chip.

        The software for the embedded system is called firmware. The firmware will be written in assembly language for time or resource critical operations or using higher level languages like C or embedded C. The software will be simulated using micro code simulators for the target processor. Since  they are supposed to perform only specific tasks, these programs are stored in read only memories(ROMs).Moreover they may need no or minimal inputs from the user, hence  the user interface like monitor, mouse and large keyboard etc,may be  absent. Embedded systems are computer systems that monitor, respond to, or control an external environment. This environment is connected to the computer system through sensors, actuators, and other input-output interfaces. It may consist of physical or biological objects of any form and structure. Often humans are part of the connected external    world, but a wide range of other natural and artificial objects, as well as animals are also possible.

        Embedded systems are also known as real time systems since they respond to an input or event and produce the result within a guaranteed   time period. This time period can be few microseconds to days or months. The computer system must meet various timing and other constraints that are imposed on it by the real-time behavior of the external world to which it is interfaced. Hence comes the name real time. Another  Name for many of these systems is reactive systems, because their primary purpose is to respond to or react to signals from their environment. A real time computer system may be a component of a larger system in which it is embedded; reasonably such a computer component is called an embedded system.

        Embedded systems control engine management systems in automobiles, monitor home heating systems and regulate the quiet operation and the even distribution of laundry in washing machines. They are the heart of toys like Furby and Tamagotchi, of golf balls that cannot get lost and of gas pumps at gasoline stations that advertise nearby restaurants on video. Above all, state-of-the art communications equipment like WAP mobile telephones, MP3 players, set-top boxes and Net devices would not be possible without these powerful miniature brains.