The wireless industrial switching system can be used to switch on or off four devices that are connected to the system. When these devices are switched on or off the status is shown on the control panel. This status shown is not a mere reflection of which switch has been pressed on the control panel, but is the feedback of the base unit to which the devices to be switched are connected. When a particular device is switched on, it draws current which is sensed and the status of the device is sent back to the control unit. Thus the status would be cent percent correct. The system also has a built in alarm for RF link failure.
The brief set up and description of the system is as under. There are two main units –first is the base or switching unit to which the devices to be switched are connected. This section has two ways radio link connected to the other unit which is the command or the control unit. The command or the control unit has four switches on the front panel with which devices can be controlled. Each switch has a corresponding LED aside it which shows the status of the device that is controlled by that particular switch.
2.1 Basic Block Diagrams
In this Project we are using Microcontroller AT89S52; it has advanced internal RAM, Timer and Counter then 89C51. It is in System Programmable 8K Byte of Flash Memory etc.