重力加速度对电子天平称量准确度的影响

Influence of Gravity Acceleration on Weighing Accuracy of Electronic Balance

电子天平的称量大多是采用电磁传感器来测量被测物的质量,其称量的准确度与重力加速度有着密切的联系。本文对电子天平的称量原理进行了详细阐述,再简述了重力加速度的变化因素,进而讨论重力加速度对电子天平称量准确度的影响,重点研究了地球纬度和海拔高度对称量结果的影响,最后提出了两种重力加速度的补偿方法。其中外附校准砝码补偿方法的重力加速度补偿方法可以简化电子天平结构,降低天平的制造成本。

The weighing of electronic balance mostly adopts electromagnetic sensor to measure the mass of the measured object,and the accuracy of weighing is closely related to gravity acceleration. In this paper,the weighing principle of electronic balance is described in detail,and then the changing factors of gravity acceleration are described,and then the influence of gravity acceleration on the weighing accuracy of electronic balance is discussed.The gravity acceleration compensation method with external calibration weight compensation method can simplify the electronic balance structure and reduce the manufacturing cost of the balance.