Online quality calibration system

The invention provides a high-efficiency and precise online quality calibration system, mainly consisting of an online quality calibration controller (5), a position detecting device and two sets of quality detecting devices. The online quality calibration controller consists of a positioning control module (15), a switching value input module (16), an analog input module (6) and a CPU, and the interfaces of all the modules are connected with the CPU through a substrate; each set of quality detecting device is provided with a weighting sensor, a quality detecting platform, and a bottle takinggrip, a bottle taking live spindle and a spindle lifting mechanism which are all controlled by a servo motion controller; after the electric signals of the position detecting device and the weightingsensors of the two sets of quality detecting devices are processed by the online qualtiy calibration controller, actual measurement quality signals and error signals are output and online quality calibration is conducted on the filling quantity of a quantitative filling system. The system solves the online quality calibration problem of filling liquid-state products, and has high efficiency and precision with the calibration precision reaching 0.01g.