Unit 1 Assignment 1 Nt1310

SYSTEM IMPLEMENTATION: At some fixed interval the PC Master sends request to the Wireless sensor node through the sub master for Data collection. The request send by the PC Master is in the form of frames. The frame which is transmitted by PC master will contain both the sub master id & the wireless sensor node id from where the data should be retrieved. The sub master receives the frame is then check for the wireless sensor node id and then it retransmit to the wireless sensor node as it is. If one of the sub masters become fails then remaining other sub master can also send the data of the other wireless sensor node. The RF module is interfaced to ARM controller. The wireless sensor nodes are in range which receives all the incoming frames and stores it in …show more content…
If the incoming frames slave ID matches with their own slave ID then they accept the frame and sends the parameter back to the master .If the slave ID does not match then the slave discards the frame. Wireless sensor nodes will measure the different parameters like temperature, light intensity and Gas by using different sensors and will send back the sensed data to PC master unit through sub master units. The data will also be displayed on LCD of the sub master unit. Relays are used for controlling action. If the sensed parameters at one of the wireless sensor node are not as per the expected parameters, then the controlling action will be taken by the PC master terminal. We have a main PC master terminal which has the VB software already installed into it .The PC master terminal which is used to monitor the status of all the wireless sensor nodes which covers the whole area. This reduces cable connections and accidental potential due complexity of cables. RF transmitter namely IEEE802.15.4 technology standard, is one of the WPAN standards. IEEE 806.15.4 aims at short distance double direction communication with lower complexity,