A Drawware Sensor Based Tree Diameter Recorder
Guo Han-ru · Xibei Linxueyuan xuebao · 2013
Diameter is the most important factor in forest inventory.A drawware sensor based tree diameter recorder that could automatically conduct the measurement was designed with SCM,clock module,CH376 module,sensor,and power module.The working principles were described as follows.Clock exports time,and the data measured by sensor are transformed into perimeter and diameter by AD.CH376 is used to read and write data.Power module regulats power to other modules.To conduct the measurement,the original time and time interval are set firstly,then clock module enters into hibernation and only time module functions.When the setting time is reached,system will be awakened and the analog measured by drawware will be transformed into perimeter and diameter and was stored in flash and then it entered into hibernation again.The system would be circulated like this.The system can gather data easily.After the U disk is inserted into USB port,the system will identify automatically and to copy the data to U disk.The accuracy of the data measured by this device is higher after the actual values are substituted by average values.