Research And Development Of High-rise Building Fire Monitoring System Based On The Zigbee Wireless Location Technology

With our residential layer higher and higher, the fire problem emerges.if the building fireproofing cannot be solved, again good houses will be destroyed by the negligence. And in the fire rescue, if we can carry on the real-time monitoring to the firefighters, fire rescue will be more smoothly.In this system, we decorate evenly in the high-rise building with functions of Zigbee wireless transmitting receiving and testing environment function. we call it the reference node, the reference node is fixed, installed in the high-rise building. The reference node can notify the indoor personnel during a fire alarm,.In the event of a fire, when indoor personnel rushed out of the fire scene, to wear a reference node and internal structure of the same basic equipment, it can detect not only the surrounding environment, can also be in line with the cooperation of reference nodes by positioning, we call the node under-test point.Equipped with a device called the coordinator, the coordinator will be connected to the computer.With the upper computer software in a computer instruction into the coordinator, the coordinator will command again to the building of reference nodes and node to test. Reference node and node to test information sent to computer through the coordinator of the building, this information will be displayed in the computer system of the upper machine. In this system, the reference node, node to test, coordinator of the hardware is the same, but the software is different. That is to say we are using same hardware download different programs to make it as a reference node, the node under test and the coordinator.In this system we use reference nodes, the node under test, the coordinator of the wireless positioning function of sensor networks. The reference node not only has the function of fire detection and alarming, but also cooperate with node under test in the function of wireless location and information transmission. In the high-rise building fireproofing, firefighters wears these wearable terminal equipments, and distribution in the building of reference nodes to form a selfhealing and self-organization function of wireless communication network system. These nodes collect the location of the fire scene and firefighters, andconvey these information timely and accurately to the commander. In this way,the commander can better get the scene of the fire and rescue, and timely evacuate firefighters to reduce the casualties of firefighters, so as to better protect the rights of a fireman’s life and health. Because in the event of a fire, the residents flee with such devices, the commanders can locate the residents, to help them better escape. In the case of no fire, the reference node can be used of the function of the fire hazard. Some of these nodes with embedded temperature sensor can monitor the indoor temperature at every moment;the smoke sensor can monitor if there is smoke;flame sensor can detect if there is a fire break out, and infrared sensor can detect the fire increased the portion of the infrared; gas sensor can always monitor indoor dangerous CO gas concentration. In fact, just by a single sensor is unable to fully prove the happenning of building fire, because the temperature sensor alarm may be caused by indoor heat source;the smoke sensor alarm probably because people were smoking is indoor; flame sensor alarm could be due to the indoor light source.To the high-rise building fire accurate judgment,PC system comprehensive judge the information from these sensors to get the final conclusion. When there are signs of fire, the system will send alarm to inform the owner of the house.The fire prevention played a very important role and it is indispensable to fire protection system with high-tech electronic products.This system uses the CC2431 chips as the main control chip. the chip not only have 8051 soft core, also have wireless positioning engines. We use the chip along with some sensor network nodes interface composition, including node under test and the reference node, the coordinator. First, we design the hardware and software of the system, then through the PC to teste the whole system, the results show that the system can realize the basic functions in high-rise building fire monitoring system.