Cooling Water Monitoring and Early Warning Device for Gravure Printing Machine Based on 51 Single Chip Microcomputer

For the gravure printing machine in the process of high-speed operation, the coolingwater delivered by the cooling system before reaching the cooling roller by the length of the pipe and the environment, the temperature will rise, resulting in the printing paper can not be cooled in time after drying, affecting the quality of printing. This paper designs a STC microcontroller based gravure printing machine cooling water monitoring and early warning device, using DS18B20 temperature sensor andYF-B9 Hallwater flowsensor to monitor the coolingwater inlet of the cooling roller, to warn when the cooling water temperature is too high or before the leakage or rupture of the piping system, and to display the cooling water temperature and flow rate in real time on the LCD display, realizing the real-time monitoring of the cooling water temperature and flow rate and fault warning function, which has certain guiding significance for the operation and maintenance of domestic gravure printing machines.