Most carpet digital jet printing machines use valve spraying technology,which controls the color paste flow rate by adsorbing the valve opening through the electromagnetic coil inside the module nozzle.Each module is com-posed of 8 nozzles,which are controlled by a drive board.A color requires 32 module color schemes and 32 driver boards for control.A 10 color printing machine requires 320 drive boards and 2 560 nozzles.Although the printing machine has the function of online monitoring of nozzles and drive boards,conducting online detection on such a large number of noz-zles and drive boards is inefficient and affects production efficiency.Therefore,it is necessary to develop an offline compre-hensive testing platform to achieve detection of the nozzle and its driver board.
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