Wireless And Real-time Measurement System Of Luodong Hoggery’s Padding Temperature

LuoDong raise pigs technology is mainly uses sawdust as ground packing,packing is mixed with probiotics "LuoDong Enzyme", it can ferment or decomposethe pigs’ dung and urine rapidly, realize no feces and sewage let out in piggery.LuoDong raise pigs technology needs to monitor packing’ s internal temperature andprovide appropriate temperature environment to the microorganism in the padding.Only the measured temperature datas is normal, can we determine padding is fermentnormally. Currently, padding’s internal temperature measurement is still have noeffective methods. In view of this problem, designed multi-point temperaturemeasurement system based on wireless transmission technology. The paper expoundsthe concrete realization methods of the system.Using STC89C52RC MCU as the core controller, C language as programminglanguage, adopting modularized program design method. System designed twoacquisition nodes and a master node, the number of acquisition nodes can increase ordecrease according to the actual needs. An I/O port in each acquisition nodes connectsthree digital temperature sensors DS18B20to realize multi-point temperaturemeasurement. Then, each acquisition nodes uses a nRF905wireless module to sendthe measurement datas to the master node. The master node receives the datas anduses LCD12864to display temperature and the node number, it also has alarmfunction. The personal computer uses the USB port to communicate with the masternode’s MCU and use VB programming to realize real time display, storage andloading functions.Because the system should be buried in padding, padding should be often stiredand pigs may destruct the devices if we install the system improperly. So, we mustconsider how to place temperature measuring devices. Therefore, we designed somepractical probe pipes, place the devices on the tube. Through a series of tests, theresults show that the system is stable, high accuracy, the transmission distance is meetthe practical application. Not only realize multi-point temperature measurement in thepadding, but also achieving the datas’ wireless transmission. It can be used formeasuring internal padding’s temperature in LuoDong hoggery and other similaroccasions.