Monitoring of five distance of hazardous chemicals storage warehouse stacking (distance

pile wall distance

zenith distance

spacing and channel spacing) is an important topic in dangerous goods warehouse safety supervision. Studying high precision positioning technology of dangerous goods stacking

is the premise of automately monitoring stacking safety. In this study

the main factors affecting the accuracy of UWB positioning of dangerous chemicals storage are analyzed

and an UWB four reference vectors compensation method applied on dangerous chemicals warehouse stacking positioning is proposed. Firstly

a reference system is established

and the monitoring area is divided into rectangular grids

each vertex of grids is named as a reference point

then the error vectors UWB positioning values at the reference points are obtained

and are took as the reference vector to calibrate the target points; Secondly

UWB tags are attached to dangerous chemical goods stacking

searching the grids around the tags

and calibrating the position value of the tags by the UWB four reference vectors compensation method. Finally

the corrected coordinates are considered as the final position of stacking. The experiment showed that this method can effectively improve the positioning precision of the dangerous chemicals warehouse stacking

it is suitable for monitoring the five distance of hazardous chemicals warehouse stacking.