Parallel Communication Protocols Software And Hardware
Parallel Communication Protocols Password And Switching

Similarly, in this layer mechanical aspects such as number of pins, their colure, labels and type of connectors are also specified.

It is advanced form of networking method that provides the communication path between various electronic devices such as the communication path between engine management system, gear control, light control, air bags, air conditioning, central locking and an automobile embedded system.

The idea about CAN was introduced in first time of world history by Robert Bosch GmbH in 1983 for making the automobile industry system more reliable, fuel efficient and safe.

With the passage of time the more developments in electronics and semiconductor devices are taking place, they have totally changed the mechanical structure of automobile devices.

So, the idea about controller area network (CAN) has solved all problems of electronic or automobile engineer which they face during designing of any vehicle control system.

Parallel Communication Protocols Software And Hardware

This control area network provides the mechanism which is interconnected with software and hardware components and by using this mechanism different electronic module can communicate with each other through central common cable.

A very simple system with CAN mechanism is shown in figure 1.

This CAN device sends data across CAN network in the form of packets and these packets are called CAN frame.

Every CAN frame consists of arbitration ID, a data field, a remote frame, an over load frame and an error frame.

The message which have heights arbitration ID has lowest priority to execute similarly the message which have lowest arbitration ID has highest priority of execute.

Because, at the same time so many messages are coming towards CAN bus therefore CAN device will first execute the message which have low arbitration ID and then will execute the other one.

First One is standard frame format in which the length of data is 11bits and second one is extended frame format in which the length of data is 29 bits.

Then CAN network works according to this relevant information.

It is basically the small satellite which triggered the communication system during any fault and is mostly used in automotive industry.

Each port could be used for high speed, low speed or single wire CAN.

It has transmission rate up to 83.3 K bauds.

This wire also gives high voltage pulse to wakeup up the sleeping device.

There is another application that can be made any one with help of different microcontrollers.

Parallel Communication Protocols Password And Switching

Suppose we make a simple CAN network for basis applications with help of three microcontrollers to detect the password and switching on the bulbs or opening the lock door.

Microcontrollers are connected with each other with help of two wires and these wires are called CAN bus.

The block diagram of this simple CAN network is shown in figure 2.

Similarly, for switching on or off the output load when the user will type the password from keypad then first one microcontroller will act as a transmitter and second one will act as a receiver.

Similarly, if it is correct then it sends signal to third microcontroller to turn on the connected load or lamp.