Research On The Whole Cycle Tilt Weighing Technology Of Cantilever Beam Electronic Scale

As a common method of modern mass measurement,electronic scale weighing has the characteristics of low delay,large measuring range,simple operation,good stability,easy digital control and so on.Electronic scales are widely used in finance and trade,manufacturing,industrial processing,scientific researches and other fields,so its accuracy is particularly important.At present,the cantilever beam electronic scale is the most widely used and widely used electronic scale in the market.According to relevant surveys,the market application rate of this kind of sensor is the highest at this stage.The level of the installation position of the cantilever electronic scale in the use process is the premise to ensure its accuracy,but in practical application,the installed plane is often non-horizontal,such as the electronic scale on the vehicle,the electronic scale on the transportation belt and so on.This will reduce the accuracy of the electronic scale,resulting in inaccurate weighing and even great error.Aiming at the measurement error caused by the non-horizontal installation of the cantilever electronic scale,according to the working mechanism of the cantilever weighing sensor,this paper designs and proposes an electronic scale to compensate the error caused by the weighing of the cantilever electronic scale when it is tilted all around.The specific research contents are as follows:Firstly,by introducing various weighing sensors and analyzing their advantages and disadvantages,this paper briefly explains the reason why the cantilever electronic scale has the highest application rate in the market.It also expounds the error research of cantilever beam electronic scale at this stage,and leads to the compensation method discussed in this paper.And development of cantilever beam electronic scale and tilt weighing experiment are planned.The experimental platform which can tilt all around is designed and realized,and the mechanical structure and circuit planning of the cantilever electronic scale are designed.And working principle of the sensor included in the developed cantilever beam electronic scale is described,and the full circumference inclination of the electronic scale is described in detail.Second,the circuit design and software design of the cantilever beam sensor electronic scale to be developed.The whole-circle tilting weighing experiment of the cantilever beam sensor electronic scale was carried out,and the relationship between the tilting direction,tilting angle,weight and output was analyzed and summarized,and the designed weighing algorithm and the error-compensating algorithm of the tiltingweighing error were summarized.The error compensation algorithm is used to compensate the output of the electronic scale,and the accuracy and stability of the output are verified experimentally.After the implementation of the method proposed in this paper to compensate the weighing error of full circle tilt,the automatic compensation of weighing error of full circle tilt within the included angle between the platform of electronic scale and the horizontal plane is less than 12 °.After inspection,using this compensation algorithm,the no-load indication error of the double hole cantilever electronic scale with a measuring range of 30000 g and a resolution of 5g is 0 and the absolute value of the full load indication error is ≤ 5g under the full circumference inclination range with an inclination angle of less than 12 °,which meets the index of the change caused by the inclination of the table scale specified in the national standard GBT7722-2005 electronic table scale.